Q: Is 5,209,638 a Prime Number?
A: No, 5,209,638 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 5209638 can be evenly divided by 1 2 3 6 7 14 21 23 42 46 69 138 161 322 483 966 5,393 10,786 16,179 32,358 37,751 75,502 113,253 124,039 226,506 248,078 372,117 744,234 868,273 1,736,546 2,604,819 and 5,209,638, with no remainder.
Since 5,209,638 cannot be divided by just 1 and 5,209,638, it is not a prime number.