Q: Is 400,508 a Prime Number?
A: No, 400,508 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 400508 can be evenly divided by 1 2 4 223 446 449 892 898 1,796 100,127 200,254 and 400,508, with no remainder.
Since 400,508 cannot be divided by just 1 and 400,508, it is not a prime number.