Q: Is 400,089 a Prime Number?
A: No, 400,089 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 400089 can be evenly divided by 1 3 193 579 691 2,073 133,363 and 400,089, with no remainder.
Since 400,089 cannot be divided by just 1 and 400,089, it is not a prime number.