Q: Is 1,604,409 a Prime Number?
A: No, 1,604,409 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 1604409 can be evenly divided by 1 3 17 51 163 193 489 579 2,771 3,281 8,313 9,843 31,459 94,377 534,803 and 1,604,409, with no remainder.
Since 1,604,409 cannot be divided by just 1 and 1,604,409, it is not a prime number.