Q: Is 40,491 a Prime Number?
A: No, 40,491 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 40491 can be evenly divided by 1 3 9 11 33 99 409 1,227 3,681 4,499 13,497 and 40,491, with no remainder.
Since 40,491 cannot be divided by just 1 and 40,491, it is not a prime number.