The number 4,431,900 can be evenly divided by 1 2 3 4 5 6 10 11 12 15 17 20 22 25 30 33 34 44 50 51 55 60 66 68 75 79 85 100 102 110 132 150 158 165 170 187 204 220 237 255 275 300 316 330 340 374 395 425 474 510 550 561 660 748 790 825 850 869 935 948 1,020 1,100 1,122 1,185 1,275 1,343 1,580 1,650 1,700 1,738 1,870 1,975 2,244 2,370 2,550 2,607 2,686 2,805 3,300 3,476 3,740 3,950 4,029 4,345 4,675 4,740 5,100 5,214 5,372 5,610 5,925 6,715 7,900 8,058 8,690 9,350 10,428 11,220 11,850 13,035 13,430 14,025 14,773 16,116 17,380 18,700 20,145 21,725 23,700 26,070 26,860 28,050 29,546 33,575 40,290 43,450 44,319 52,140 56,100 59,092 65,175 67,150 73,865 80,580 86,900 88,638 100,725 130,350 134,300 147,730 177,276 201,450 221,595 260,700 295,460 369,325 402,900 443,190 738,650 886,380 1,107,975 1,477,300 2,215,950 and 4,431,900, with no remainder.
Since 4,431,900 cannot be divided by just 1 and 4,431,900, it is a composite number.