The number 3,474,900 can be evenly divided by 1 2 3 4 5 6 9 10 11 12 13 15 18 20 22 25 26 27 30 33 36 39 44 45 50 52 54 55 60 65 66 75 78 81 90 99 100 108 110 117 130 132 135 143 150 156 162 165 180 195 198 220 225 234 243 260 270 275 286 297 300 324 325 330 351 390 396 405 429 450 468 486 495 540 550 572 585 594 650 660 675 702 715 780 810 825 858 891 900 972 975 990 1,053 1,100 1,170 1,188 1,215 1,287 1,300 1,350 1,404 1,430 1,485 1,620 1,650 1,716 1,755 1,782 1,950 1,980 2,025 2,106 2,145 2,340 2,430 2,475 2,574 2,673 2,700 2,860 2,925 2,970 3,159 3,300 3,510 3,564 3,575 3,861 3,900 4,050 4,212 4,290 4,455 4,860 4,950 5,148 5,265 5,346 5,850 5,940 6,075 6,318 6,435 7,020 7,150 7,425 7,722 8,100 8,580 8,775 8,910 9,900 10,530 10,692 10,725 11,583 11,700 12,150 12,636 12,870 13,365 14,300 14,850 15,444 15,795 17,550 17,820 19,305 21,060 21,450 22,275 23,166 24,300 25,740 26,325 26,730 29,700 31,590 32,175 34,749 35,100 38,610 42,900 44,550 46,332 52,650 53,460 57,915 63,180 64,350 66,825 69,498 77,220 78,975 89,100 96,525 105,300 115,830 128,700 133,650 138,996 157,950 173,745 193,050 231,660 267,300 289,575 315,900 347,490 386,100 579,150 694,980 868,725 1,158,300 1,737,450 and 3,474,900, with no remainder.
Since 3,474,900 cannot be divided by just 1 and 3,474,900, it is a composite number.