A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 4847472 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 36 42 48 49 54 56 63 72 84 98 108 112 126 144 147 168 189 196 216 229 252 294 336 378 392 432 441 458 504 588 687 756 784 882 916 1,008 1,176 1,323 1,374 1,512 1,603 1,764 1,832 2,061 2,352 2,646 2,748 3,024 3,206 3,528 3,664 4,122 4,809 5,292 5,496 6,183 6,412 7,056 8,244 9,618 10,584 10,992 11,221 12,366 12,824 14,427 16,488 19,236 21,168 22,442 24,732 25,648 28,854 32,976 33,663 38,472 43,281 44,884 49,464 57,708 67,326 76,944 86,562 89,768 98,928 100,989 115,416 134,652 173,124 179,536 201,978 230,832 269,304 302,967 346,248 403,956 538,608 605,934 692,496 807,912 1,211,868 1,615,824 2,423,736 and 4,847,472, with no remainder.
Since 4,847,472 cannot be divided by just 1 and 4,847,472, it is not a prime number.