It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 489 509 is not a prime number.
For example, 489 509 can be divided by 23: 489 509 / 23 = 21 283.
For 489 509 to be a prime number, it would have been required that 489 509 has only two divisors, i.e., itself and 1.
Find out more:
489 509 is an odd number, because it is not evenly divisible by 2.
Find out more:
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 489 509 is about 699.649.
Thus, the square root of 489 509 is not an integer, and therefore 489 509 is not a square number.
The square of a number (here 489 509) is the result of the product of this number (489 509) by itself (i.e., 489 509 × 489 509); the square of 489 509 is sometimes called "raising 489 509 to the power 2", or "489 509 squared".
The square of 489 509 is 239 619 061 081 because 489 509 × 489 509 = 489 5092 = 239 619 061 081.
As a consequence, 489 509 is the square root of 239 619 061 081.
The multiples of 489 509 are all integers evenly divisible by 489 509, that is all numbers such that the remainder of the division by 489 509 is zero. There are infinitely many multiples of 489 509. The smallest multiples of 489 509 are: