Q: Is 400,608 a Prime Number?
A: No, 400,608 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 400608 can be evenly divided by 1 2 3 4 6 8 9 12 13 16 18 24 26 32 36 39 48 52 72 78 96 104 107 117 144 156 208 214 234 288 312 321 416 428 468 624 642 856 936 963 1,248 1,284 1,391 1,712 1,872 1,926 2,568 2,782 3,424 3,744 3,852 4,173 5,136 5,564 7,704 8,346 10,272 11,128 12,519 15,408 16,692 22,256 25,038 30,816 33,384 44,512 50,076 66,768 100,152 133,536 200,304 and 400,608, with no remainder.
Since 400,608 cannot be divided by just 1 and 400,608, it is not a prime number.