It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 489 307 is not a prime number.
For example, 489 307 can be divided by 7: 489 307 / 7 = 69 901.
For 489 307 to be a prime number, it would have been required that 489 307 has only two divisors, i.e., itself and 1.
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489 307 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 489 307 is about 699.505.
Thus, the square root of 489 307 is not an integer, and therefore 489 307 is not a square number.
The square of a number (here 489 307) is the result of the product of this number (489 307) by itself (i.e., 489 307 × 489 307); the square of 489 307 is sometimes called "raising 489 307 to the power 2", or "489 307 squared".
The square of 489 307 is 239 421 340 249 because 489 307 × 489 307 = 489 3072 = 239 421 340 249.
As a consequence, 489 307 is the square root of 239 421 340 249.
The multiples of 489 307 are all integers evenly divisible by 489 307, that is all numbers such that the remainder of the division by 489 307 is zero. There are infinitely many multiples of 489 307. The smallest multiples of 489 307 are: