Q: Is 3,940,821 a Prime Number?
A: No, 3,940,821 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 3940821 can be evenly divided by 1 3 9 17 43 51 129 153 387 599 731 1,797 2,193 5,391 6,579 10,183 25,757 30,549 77,271 91,647 231,813 437,869 1,313,607 and 3,940,821, with no remainder.
Since 3,940,821 cannot be divided by just 1 and 3,940,821, it is not a prime number.