A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 4334340 can be evenly divided by 1 2 3 4 5 6 10 12 15 20 29 30 47 53 58 60 87 94 106 116 141 145 159 174 188 212 235 265 282 290 318 348 435 470 530 564 580 636 705 795 870 940 1,060 1,363 1,410 1,537 1,590 1,740 2,491 2,726 2,820 3,074 3,180 4,089 4,611 4,982 5,452 6,148 6,815 7,473 7,685 8,178 9,222 9,964 12,455 13,630 14,946 15,370 16,356 18,444 20,445 23,055 24,910 27,260 29,892 30,740 37,365 40,890 46,110 49,820 72,239 74,730 81,780 92,220 144,478 149,460 216,717 288,956 361,195 433,434 722,390 866,868 1,083,585 1,444,780 2,167,170 and 4,334,340, with no remainder.
Since 4,334,340 cannot be divided by just 1 and 4,334,340, it is not a prime number.