Q: Is 864,400 a Prime Number?
A: No, 864,400 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 864400 can be evenly divided by 1 2 4 5 8 10 16 20 25 40 50 80 100 200 400 2,161 4,322 8,644 10,805 17,288 21,610 34,576 43,220 54,025 86,440 108,050 172,880 216,100 432,200 and 864,400, with no remainder.
Since 864,400 cannot be divided by just 1 and 864,400, it is not a prime number.