It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 489 268 is not a prime number.
For example, 489 268 can be divided by 2: 489 268 / 2 = 244 634.
For 489 268 to be a prime number, it would have been required that 489 268 has only two divisors, i.e., itself and 1.
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489 268 is an even number, because it is evenly divisible by 2: 489 268 / 2 = 244 634.
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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 489 268 is about 699.477.
Thus, the square root of 489 268 is not an integer, and therefore 489 268 is not a square number.
The square of a number (here 489 268) is the result of the product of this number (489 268) by itself (i.e., 489 268 × 489 268); the square of 489 268 is sometimes called "raising 489 268 to the power 2", or "489 268 squared".
The square of 489 268 is 239 383 175 824 because 489 268 × 489 268 = 489 2682 = 239 383 175 824.
As a consequence, 489 268 is the square root of 239 383 175 824.
The multiples of 489 268 are all integers evenly divisible by 489 268, that is all numbers such that the remainder of the division by 489 268 is zero. There are infinitely many multiples of 489 268. The smallest multiples of 489 268 are: