Q: Is 400,958 a Prime Number?
A: No, 400,958 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 400958 can be evenly divided by 1 2 433 463 866 926 200,479 and 400,958, with no remainder.
Since 400,958 cannot be divided by just 1 and 400,958, it is not a prime number.