Q: Is 400,990 a Prime Number?
A: No, 400,990 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 400990 can be evenly divided by 1 2 5 10 40,099 80,198 200,495 and 400,990, with no remainder.
Since 400,990 cannot be divided by just 1 and 400,990, it is not a prime number.