It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 489 488 is not a prime number.
For example, 489 488 can be divided by 2: 489 488 / 2 = 244 744.
For 489 488 to be a prime number, it would have been required that 489 488 has only two divisors, i.e., itself and 1.
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489 488 is an even number, because it is evenly divisible by 2: 489 488 / 2 = 244 744.
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A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 489 488 is about 699.634.
Thus, the square root of 489 488 is not an integer, and therefore 489 488 is not a square number.
The square of a number (here 489 488) is the result of the product of this number (489 488) by itself (i.e., 489 488 × 489 488); the square of 489 488 is sometimes called "raising 489 488 to the power 2", or "489 488 squared".
The square of 489 488 is 239 598 502 144 because 489 488 × 489 488 = 489 4882 = 239 598 502 144.
As a consequence, 489 488 is the square root of 239 598 502 144.
The multiples of 489 488 are all integers evenly divisible by 489 488, that is all numbers such that the remainder of the division by 489 488 is zero. There are infinitely many multiples of 489 488. The smallest multiples of 489 488 are: