Prime Number Checker

Your task is to develop a function is_prime_number in Python that checks if a given number is a prime number. The function should return True if the number is prime, and False otherwise.

Function Requirements

• Name: is_prime_number
• Input: A single number (can be positive, negative, or a floating point number).
• Output: True if the number is a prime number, False otherwise.

Examples

1. is_prime_number(5) should return True, as 5 is a prime number.
2. is_prime_number(4) should return False, as 4 is not a prime number.

Key Points

• Ensure your function handles a variety of cases, including negative numbers and non-integer values, as they will be part of the challenges.
• Your implementation should efficiently determine the primality of a number.

Good luck, and happy coding!