It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 488 491 is not a prime number.
For example, 488 491 can be divided by 179: 488 491 / 179 = 2 729.
For 488 491 to be a prime number, it would have been required that 488 491 has only two divisors, i.e., itself and 1.
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488 491 is an odd number, because it is not evenly divisible by 2.
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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 488 491 is about 698.921.
Thus, the square root of 488 491 is not an integer, and therefore 488 491 is not a square number.
The square of a number (here 488 491) is the result of the product of this number (488 491) by itself (i.e., 488 491 × 488 491); the square of 488 491 is sometimes called "raising 488 491 to the power 2", or "488 491 squared".
The square of 488 491 is 238 623 457 081 because 488 491 × 488 491 = 488 4912 = 238 623 457 081.
As a consequence, 488 491 is the square root of 238 623 457 081.
The multiples of 488 491 are all integers evenly divisible by 488 491, that is all numbers such that the remainder of the division by 488 491 is zero. There are infinitely many multiples of 488 491. The smallest multiples of 488 491 are: