Q: Is 409,221 a Prime Number?
A: No, 409,221 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 409221 can be evenly divided by 1 3 9 41 123 369 1,109 3,327 9,981 45,469 136,407 and 409,221, with no remainder.
Since 409,221 cannot be divided by just 1 and 409,221, it is not a prime number.