diff --git a/bit_manipulation/Add_largest_power_of_2_less_than_or_equal_to_a_given_number.py b/bit_manipulation/Add_largest_power_of_2_less_than_or_equal_to_a_given_number.py
new file mode 100644
index 000000000000..eb3648322f21
--- /dev/null
+++ b/bit_manipulation/Add_largest_power_of_2_less_than_or_equal_to_a_given_number.py
@@ -0,0 +1,43 @@
+"""
+Fixes #9347
+Name : Sharnabh Banerjee
+
+"""
+
+
+def add_largest(num: int) -> int:
+    """
+    Add Largest Power of 2 less then or equal to a given number
+    >>> add_largest(5.3)
+    Traceback (most recent call last):
+        ...
+    TypeError: num must be an integer !!
+    >>> add_largest(5)
+    9
+    >>> add_largest(10)
+    18
+    >>> add_largest(99)
+    163
+    >>> add_largest(-10)
+    0
+    >>> add_largest(999)
+    1511
+
+    """
+    if isinstance(num, float):
+        raise TypeError("num must be an integer !!")
+    if num <= 0:
+        return 0
+    temp = num
+    count = 0
+    while num != 1:
+        num = num >> 1
+        count += 1
+    res = 2**count + temp
+    return res
+
+
+if __name__ == "__main__":
+    import doctest
+
+    doctest.testmod()