The number 4,689,900 can be evenly divided by 1 2 3 4 5 6 9 10 12 15 18 20 25 27 30 36 45 50 54 60 75 81 90 100 108 135 150 162 180 193 225 243 270 300 324 386 405 450 486 540 579 675 772 810 900 965 972 1,158 1,215 1,350 1,620 1,737 1,930 2,025 2,316 2,430 2,700 2,895 3,474 3,860 4,050 4,825 4,860 5,211 5,790 6,075 6,948 8,100 8,685 9,650 10,422 11,580 12,150 14,475 15,633 17,370 19,300 20,844 24,300 26,055 28,950 31,266 34,740 43,425 46,899 52,110 57,900 62,532 78,165 86,850 93,798 104,220 130,275 156,330 173,700 187,596 234,495 260,550 312,660 390,825 468,990 521,100 781,650 937,980 1,172,475 1,563,300 2,344,950 and 4,689,900, with no remainder.
Since 4,689,900 cannot be divided by just 1 and 4,689,900, it is a composite number.