It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 488 258 is not a prime number.
For example, 488 258 can be divided by 2: 488 258 / 2 = 244 129.
For 488 258 to be a prime number, it would have been required that 488 258 has only two divisors, i.e., itself and 1.
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488 258 is an even number, because it is evenly divisible by 2: 488 258 / 2 = 244 129.
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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 488 258 is about 698.755.
Thus, the square root of 488 258 is not an integer, and therefore 488 258 is not a square number.
The square of a number (here 488 258) is the result of the product of this number (488 258) by itself (i.e., 488 258 × 488 258); the square of 488 258 is sometimes called "raising 488 258 to the power 2", or "488 258 squared".
The square of 488 258 is 238 395 874 564 because 488 258 × 488 258 = 488 2582 = 238 395 874 564.
As a consequence, 488 258 is the square root of 238 395 874 564.
The multiples of 488 258 are all integers evenly divisible by 488 258, that is all numbers such that the remainder of the division by 488 258 is zero. There are infinitely many multiples of 488 258. The smallest multiples of 488 258 are: