It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 489 311 is not a prime number.
For example, 489 311 can be divided by 17: 489 311 / 17 = 28 783.
For 489 311 to be a prime number, it would have been required that 489 311 has only two divisors, i.e., itself and 1.
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489 311 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 489 311 is about 699.508.
Thus, the square root of 489 311 is not an integer, and therefore 489 311 is not a square number.
The square of a number (here 489 311) is the result of the product of this number (489 311) by itself (i.e., 489 311 × 489 311); the square of 489 311 is sometimes called "raising 489 311 to the power 2", or "489 311 squared".
The square of 489 311 is 239 425 254 721 because 489 311 × 489 311 = 489 3112 = 239 425 254 721.
As a consequence, 489 311 is the square root of 239 425 254 721.
The multiples of 489 311 are all integers evenly divisible by 489 311, that is all numbers such that the remainder of the division by 489 311 is zero. There are infinitely many multiples of 489 311. The smallest multiples of 489 311 are: