Q: Is 400,493 a Prime Number?
A: No, 400,493 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 400493 can be evenly divided by 1 619 647 and 400,493, with no remainder.
Since 400,493 cannot be divided by just 1 and 400,493, it is not a prime number.