Q: Is 1,397,745 a Prime Number?
A: No, 1,397,745 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 1397745 can be evenly divided by 1 3 5 9 15 45 89 267 349 445 801 1,047 1,335 1,745 3,141 4,005 5,235 15,705 31,061 93,183 155,305 279,549 465,915 and 1,397,745, with no remainder.
Since 1,397,745 cannot be divided by just 1 and 1,397,745, it is not a prime number.