It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 489 089 is not a prime number.
For example, 489 089 can be divided by 41: 489 089 / 41 = 11 929.
For 489 089 to be a prime number, it would have been required that 489 089 has only two divisors, i.e., itself and 1.
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489 089 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 489 089 is about 699.349.
Thus, the square root of 489 089 is not an integer, and therefore 489 089 is not a square number.
The square of a number (here 489 089) is the result of the product of this number (489 089) by itself (i.e., 489 089 × 489 089); the square of 489 089 is sometimes called "raising 489 089 to the power 2", or "489 089 squared".
The square of 489 089 is 239 208 049 921 because 489 089 × 489 089 = 489 0892 = 239 208 049 921.
As a consequence, 489 089 is the square root of 239 208 049 921.
The multiples of 489 089 are all integers evenly divisible by 489 089, that is all numbers such that the remainder of the division by 489 089 is zero. There are infinitely many multiples of 489 089. The smallest multiples of 489 089 are: