Q: Is 399,899 a Prime Number?
A: Yes, 399,899 is a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 399899 can be evenly divided by 1 and 399,899, with no remainder.
Since 399,899 can be divided by just 1 and 399,899, it is a prime number.