A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 9358470 can be evenly divided by 1 2 3 5 6 9 10 11 15 18 22 23 27 30 33 45 46 54 55 66 69 90 99 110 115 135 137 138 165 198 207 230 253 270 274 297 330 345 411 414 495 506 594 621 685 690 759 822 990 1,035 1,233 1,242 1,265 1,370 1,485 1,507 1,518 2,055 2,070 2,277 2,466 2,530 2,970 3,014 3,105 3,151 3,699 3,795 4,110 4,521 4,554 6,165 6,210 6,302 6,831 7,398 7,535 7,590 9,042 9,453 11,385 12,330 13,563 13,662 15,070 15,755 18,495 18,906 22,605 22,770 27,126 28,359 31,510 34,155 34,661 36,990 40,689 45,210 47,265 56,718 67,815 68,310 69,322 81,378 85,077 94,530 103,983 135,630 141,795 170,154 173,305 203,445 207,966 283,590 311,949 346,610 406,890 425,385 519,915 623,898 850,770 935,847 1,039,830 1,559,745 1,871,694 3,119,490 4,679,235 and 9,358,470, with no remainder.
Since 9,358,470 cannot be divided by just 1 and 9,358,470, it is not a prime number.