A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 5783400 can be evenly divided by 1 2 3 4 5 6 7 8 9 10 12 14 15 17 18 20 21 24 25 27 28 30 34 35 36 40 42 45 50 51 54 56 60 63 68 70 72 75 81 84 85 90 100 102 105 108 119 120 126 135 136 140 150 153 162 168 170 175 180 189 200 204 210 216 225 238 243 252 255 270 280 300 306 315 324 340 350 357 360 378 405 408 420 425 450 459 476 486 504 510 525 540 567 595 600 612 630 648 675 680 700 714 756 765 810 840 850 900 918 945 952 972 1,020 1,050 1,071 1,080 1,134 1,190 1,215 1,224 1,260 1,275 1,350 1,377 1,400 1,428 1,512 1,530 1,575 1,620 1,700 1,701 1,785 1,800 1,836 1,890 1,944 2,025 2,040 2,100 2,142 2,268 2,295 2,380 2,430 2,520 2,550 2,700 2,754 2,835 2,856 2,975 3,060 3,150 3,213 3,240 3,400 3,402 3,570 3,672 3,780 3,825 4,050 4,131 4,200 4,284 4,536 4,590 4,725 4,760 4,860 5,100 5,355 5,400 5,508 5,670 5,950 6,075 6,120 6,300 6,426 6,804 6,885 7,140 7,560 7,650 8,100 8,262 8,505 8,568 8,925 9,180 9,450 9,639 9,720 10,200 10,710 11,016 11,340 11,475 11,900 12,150 12,600 12,852 13,608 13,770 14,175 14,280 15,300 16,065 16,200 16,524 17,010 17,850 18,360 18,900 19,278 20,655 21,420 22,680 22,950 23,800 24,300 25,704 26,775 27,540 28,350 28,917 30,600 32,130 33,048 34,020 34,425 35,700 37,800 38,556 41,310 42,525 42,840 45,900 48,195 48,600 53,550 55,080 56,700 57,834 64,260 68,040 68,850 71,400 77,112 80,325 82,620 85,050 91,800 96,390 103,275 107,100 113,400 115,668 128,520 137,700 144,585 160,650 165,240 170,100 192,780 206,550 214,200 231,336 240,975 275,400 289,170 321,300 340,200 385,560 413,100 481,950 578,340 642,600 722,925 826,200 963,900 1,156,680 1,445,850 1,927,800 2,891,700 and 5,783,400, with no remainder.
Since 5,783,400 cannot be divided by just 1 and 5,783,400, it is not a prime number.