It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 489 427 129 is not a prime number.
For example, 489 427 129 can be divided by 22 123: 489 427 129 / 22123 = 22 123.
For 489 427 129 to be a prime number, it would have been required that 489 427 129 has only two divisors, i.e., itself and 1.
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489 427 129 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 489 427 129 is 22 123.
Therefore, the square root of 489 427 129 is an integer, and as a consequence 489 427 129 is a perfect square.
As a consequence, 22 123 is the square root of 489 427 129.
The square of a number (here 489 427 129) is the result of the product of this number (489 427 129) by itself (i.e., 489 427 129 × 489 427 129); the square of 489 427 129 is sometimes called "raising 489 427 129 to the power 2", or "489 427 129 squared".
The square of 489 427 129 is 239 538 914 601 182 656 because 489 427 129 × 489 427 129 = 489 427 1292 = 239 538 914 601 182 656.
As a consequence, 489 427 129 is the square root of 239 538 914 601 182 656.
489 427 129 is a number with 9 digits.
The multiples of 489 427 129 are all integers evenly divisible by 489 427 129, that is all numbers such that the remainder of the division by 489 427 129 is zero. There are infinitely many multiples of 489 427 129. The smallest multiples of 489 427 129 are: