A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 8842470 can be evenly divided by 1 2 3 5 6 7 10 13 14 15 21 26 30 35 39 41 42 65 70 78 79 82 91 105 123 130 158 182 195 205 210 237 246 273 287 390 395 410 455 474 533 546 553 574 615 790 861 910 1,027 1,066 1,106 1,185 1,230 1,365 1,435 1,599 1,659 1,722 2,054 2,370 2,665 2,730 2,765 2,870 3,081 3,198 3,239 3,318 3,731 4,305 5,135 5,330 5,530 6,162 6,478 7,189 7,462 7,995 8,295 8,610 9,717 10,270 11,193 14,378 15,405 15,990 16,195 16,590 18,655 19,434 21,567 22,386 22,673 30,810 32,390 35,945 37,310 42,107 43,134 45,346 48,585 55,965 68,019 71,890 84,214 97,170 107,835 111,930 113,365 126,321 136,038 210,535 215,670 226,730 252,642 294,749 340,095 421,070 589,498 631,605 680,190 884,247 1,263,210 1,473,745 1,768,494 2,947,490 4,421,235 and 8,842,470, with no remainder.
Since 8,842,470 cannot be divided by just 1 and 8,842,470, it is not a prime number.