The number 871,416 can be evenly divided by 1 2 3 4 6 7 8 9 12 13 14 18 19 21 24 26 28 36 38 39 42 49 52 56 57 63 72 76 78 84 91 98 104 114 117 126 133 147 152 156 168 171 182 196 228 234 247 252 266 273 294 312 342 364 392 399 441 456 468 494 504 532 546 588 637 684 728 741 798 819 882 931 936 988 1,064 1,092 1,176 1,197 1,274 1,368 1,482 1,596 1,638 1,729 1,764 1,862 1,911 1,976 2,184 2,223 2,394 2,548 2,793 2,964 3,192 3,276 3,458 3,528 3,724 3,822 4,446 4,788 5,096 5,187 5,586 5,733 5,928 6,552 6,916 7,448 7,644 8,379 8,892 9,576 10,374 11,172 11,466 12,103 13,832 15,288 15,561 16,758 17,784 20,748 22,344 22,932 24,206 31,122 33,516 36,309 41,496 45,864 48,412 62,244 67,032 72,618 96,824 108,927 124,488 145,236 217,854 290,472 435,708 and 871,416, with no remainder.
Since 871,416 cannot be divided by just 1 and 871,416, it is a composite number.