It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 488 389 is not a prime number.
For example, 488 389 can be divided by 11: 488 389 / 11 = 44 399.
For 488 389 to be a prime number, it would have been required that 488 389 has only two divisors, i.e., itself and 1.
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488 389 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 488 389 is about 698.848.
Thus, the square root of 488 389 is not an integer, and therefore 488 389 is not a square number.
The square of a number (here 488 389) is the result of the product of this number (488 389) by itself (i.e., 488 389 × 488 389); the square of 488 389 is sometimes called "raising 488 389 to the power 2", or "488 389 squared".
The square of 488 389 is 238 523 815 321 because 488 389 × 488 389 = 488 3892 = 238 523 815 321.
As a consequence, 488 389 is the square root of 238 523 815 321.
The multiples of 488 389 are all integers evenly divisible by 488 389, that is all numbers such that the remainder of the division by 488 389 is zero. There are infinitely many multiples of 488 389. The smallest multiples of 488 389 are: