Q: Is 3,947,721 a Prime Number?
A: No, 3,947,721 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 3947721 can be evenly divided by 1 3 1,315,907 and 3,947,721, with no remainder.
Since 3,947,721 cannot be divided by just 1 and 3,947,721, it is not a prime number.