It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 89 489 489 is not a prime number.
For example, 89 489 489 can be divided by 59: 89 489 489 / 59 = 1 516 771.
For 89 489 489 to be a prime number, it would have been required that 89 489 489 has only two divisors, i.e., itself and 1.
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89 489 489 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 89 489 489 is about 9 459.888.
Thus, the square root of 89 489 489 is not an integer, and therefore 89 489 489 is not a square number.
The square of a number (here 89 489 489) is the result of the product of this number (89 489 489) by itself (i.e., 89 489 489 × 89 489 489); the square of 89 489 489 is sometimes called "raising 89 489 489 to the power 2", or "89 489 489 squared".
The square of 89 489 489 is 8 008 368 641 481 121 because 89 489 489 × 89 489 489 = 89 489 4892 = 8 008 368 641 481 121.
As a consequence, 89 489 489 is the square root of 8 008 368 641 481 121.
89 489 489 is a number with 8 digits.
The multiples of 89 489 489 are all integers evenly divisible by 89 489 489, that is all numbers such that the remainder of the division by 89 489 489 is zero. There are infinitely many multiples of 89 489 489. The smallest multiples of 89 489 489 are: