It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 489 712 is not a prime number.
For example, 489 712 can be divided by 2: 489 712 / 2 = 244 856.
For 489 712 to be a prime number, it would have been required that 489 712 has only two divisors, i.e., itself and 1.
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489 712 is an even number, because it is evenly divisible by 2: 489 712 / 2 = 244 856.
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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 489 712 is about 699.794.
Thus, the square root of 489 712 is not an integer, and therefore 489 712 is not a square number.
The square of a number (here 489 712) is the result of the product of this number (489 712) by itself (i.e., 489 712 × 489 712); the square of 489 712 is sometimes called "raising 489 712 to the power 2", or "489 712 squared".
The square of 489 712 is 239 817 842 944 because 489 712 × 489 712 = 489 7122 = 239 817 842 944.
As a consequence, 489 712 is the square root of 239 817 842 944.
The multiples of 489 712 are all integers evenly divisible by 489 712, that is all numbers such that the remainder of the division by 489 712 is zero. There are infinitely many multiples of 489 712. The smallest multiples of 489 712 are: