A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 4979184 can be evenly divided by 1 2 3 4 6 7 8 12 14 16 21 24 28 29 42 48 49 56 58 73 84 87 98 112 116 146 147 168 174 196 203 219 232 292 294 336 348 392 406 438 464 511 584 588 609 696 784 812 876 1,022 1,168 1,176 1,218 1,392 1,421 1,533 1,624 1,752 2,044 2,117 2,352 2,436 2,842 3,066 3,248 3,504 3,577 4,088 4,234 4,263 4,872 5,684 6,132 6,351 7,154 8,176 8,468 8,526 9,744 10,731 11,368 12,264 12,702 14,308 14,819 16,936 17,052 21,462 22,736 24,528 25,404 28,616 29,638 33,872 34,104 42,924 44,457 50,808 57,232 59,276 68,208 85,848 88,914 101,616 103,733 118,552 171,696 177,828 207,466 237,104 311,199 355,656 414,932 622,398 711,312 829,864 1,244,796 1,659,728 2,489,592 and 4,979,184, with no remainder.
Since 4,979,184 cannot be divided by just 1 and 4,979,184, it is not a prime number.