diff --git a/docs/ops/arithmetic/Atan_1.md b/docs/ops/arithmetic/Atan_1.md
index cd56a54fdbbb01..7fc9525bf6622c 100644
--- a/docs/ops/arithmetic/Atan_1.md
+++ b/docs/ops/arithmetic/Atan_1.md
@@ -16,7 +16,7 @@ a_{i} = atan(a_{i})
 
 **Inputs**
 
-* **1**: An tensor of type *T* and arbitrary shape. **Required.**
+* **1**: A tensor of type *T* and arbitrary shape. **Required.**
 
 **Outputs**
 
diff --git a/inference-engine/tests/functional/plugin/cpu/shared_tests_instances/single_layer_tests/activation.cpp b/inference-engine/tests/functional/plugin/cpu/shared_tests_instances/single_layer_tests/activation.cpp
index 11a2c41a68e52c..61f11d4ba5dee9 100644
--- a/inference-engine/tests/functional/plugin/cpu/shared_tests_instances/single_layer_tests/activation.cpp
+++ b/inference-engine/tests/functional/plugin/cpu/shared_tests_instances/single_layer_tests/activation.cpp
@@ -65,6 +65,7 @@ const std::map<ActivationTypes, std::vector<std::vector<float>>> activationTypes
 
 // List of operations that should be tested also with integer precision
 const std::map<ActivationTypes, std::vector<std::vector<float>>> intActivationTypes = {
+        {Atan,                  {}},
         {Negative,              {}},
         {Ceiling,               {}},
         {Cos,                   {}},
diff --git a/ngraph/core/reference/include/ngraph/runtime/reference/atan.hpp b/ngraph/core/reference/include/ngraph/runtime/reference/atan.hpp
index 03dcdf525f269c..f5510b4edd7987 100644
--- a/ngraph/core/reference/include/ngraph/runtime/reference/atan.hpp
+++ b/ngraph/core/reference/include/ngraph/runtime/reference/atan.hpp
@@ -13,7 +13,7 @@ namespace ngraph
     {
         namespace reference
         {
-            template <typename T>
+            template <typename T, typename std::enable_if<!std::is_integral<T>::value, bool>::type = true>
             void atan(const T* arg, T* out, size_t count)
             {
                 for (size_t i = 0; i < count; i++)
@@ -21,6 +21,14 @@ namespace ngraph
                     out[i] = std::atan(arg[i]);
                 }
             }
+            template <typename T, typename std::enable_if<std::is_integral<T>::value, bool>::type = true>
+            void atan(const T* arg, T* out, size_t count)
+            {
+                for (size_t i = 0; i < count; i++)
+                {
+                    out[i] = std::roundl(std::atan(arg[i]));
+                }
+            }
         } // namespace reference
     }     // namespace runtime
 } // namespace ngraph
diff --git a/ngraph/test/backend/atan.in.cpp b/ngraph/test/backend/atan.in.cpp
index 8a8f29bd0abbf2..5c5e4f79bfcbff 100644
--- a/ngraph/test/backend/atan.in.cpp
+++ b/ngraph/test/backend/atan.in.cpp
@@ -31,7 +31,7 @@ using namespace ngraph;
 static string s_manifest = "${MANIFEST}";
 using TestEngine = test::ENGINE_CLASS_NAME(${BACKEND_NAME});
 
-NGRAPH_TEST(${BACKEND_NAME}, atan)
+NGRAPH_TEST(${BACKEND_NAME}, atan_float)
 {
     Shape shape{11};
     auto A = make_shared<op::Parameter>(element::f32, shape);
@@ -53,3 +53,16 @@ NGRAPH_TEST(${BACKEND_NAME}, atan)
                                           1.32581766f});
     test_case.run();
 }
+
+NGRAPH_TEST(${BACKEND_NAME}, atan_int)
+{
+    Shape shape{5};
+    auto A = make_shared<op::Parameter>(element::i32, shape);
+    auto f = make_shared<Function>(make_shared<op::Atan>(A), ParameterVector{A});
+
+    auto test_case = test::TestCase<TestEngine>(f);
+    test_case.add_input<int32_t>({-2, -1, 0, 1, 2});
+    test_case.add_expected_output<int32_t>(shape,
+                                         {-1, -1, 0, 1, 1});
+    test_case.run();
+}