Q: Is 408,409 a Prime Number?
A: No, 408,409 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 408409 can be evenly divided by 1 149 2,741 and 408,409, with no remainder.
Since 408,409 cannot be divided by just 1 and 408,409, it is not a prime number.