Q: Is 438,400 a Prime Number?
A: No, 438,400 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 438400 can be evenly divided by 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 128 137 160 200 274 320 400 548 640 685 800 1,096 1,370 1,600 2,192 2,740 3,200 3,425 4,384 5,480 6,850 8,768 10,960 13,700 17,536 21,920 27,400 43,840 54,800 87,680 109,600 219,200 and 438,400, with no remainder.
Since 438,400 cannot be divided by just 1 and 438,400, it is not a prime number.