It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 485 489 is not a prime number.
For example, 485 489 can be divided by 29: 485 489 / 29 = 16 741.
For 485 489 to be a prime number, it would have been required that 485 489 has only two divisors, i.e., itself and 1.
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485 489 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 485 489 is about 696.770.
Thus, the square root of 485 489 is not an integer, and therefore 485 489 is not a square number.
The square of a number (here 485 489) is the result of the product of this number (485 489) by itself (i.e., 485 489 × 485 489); the square of 485 489 is sometimes called "raising 485 489 to the power 2", or "485 489 squared".
The square of 485 489 is 235 699 569 121 because 485 489 × 485 489 = 485 4892 = 235 699 569 121.
As a consequence, 485 489 is the square root of 235 699 569 121.
The multiples of 485 489 are all integers evenly divisible by 485 489, that is all numbers such that the remainder of the division by 485 489 is zero. There are infinitely many multiples of 485 489. The smallest multiples of 485 489 are: