Q: Is 400,199 a Prime Number?
A: Yes, 400,199 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 400199 can be evenly divided by 1 and 400,199, with no remainder.
Since 400,199 can be divided by just 1 and 400,199, it is a prime number.