Q: Is 1,639,729 a Prime Number?
A: No, 1,639,729 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 1639729 can be evenly divided by 1 7 13 37 91 259 481 487 3,367 3,409 6,331 18,019 44,317 126,133 234,247 and 1,639,729, with no remainder.
Since 1,639,729 cannot be divided by just 1 and 1,639,729, it is not a prime number.