Q: Is 398,789 a Prime Number?
A: No, 398,789 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 398789 can be evenly divided by 1 107 3,727 and 398,789, with no remainder.
Since 398,789 cannot be divided by just 1 and 398,789, it is not a prime number.