Q: Is 4,393,221 a Prime Number?
A: No, 4,393,221 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 4393221 can be evenly divided by 1 3 7 21 209,201 627,603 1,464,407 and 4,393,221, with no remainder.
Since 4,393,221 cannot be divided by just 1 and 4,393,221, it is not a prime number.