It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 989 431 is not a prime number.
For example, 989 431 can be divided by 463: 989 431 / 463 = 2 137.
For 989 431 to be a prime number, it would have been required that 989 431 has only two divisors, i.e., itself and 1.
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989 431 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 989 431 is about 994.701.
Thus, the square root of 989 431 is not an integer, and therefore 989 431 is not a square number.
The square of a number (here 989 431) is the result of the product of this number (989 431) by itself (i.e., 989 431 × 989 431); the square of 989 431 is sometimes called "raising 989 431 to the power 2", or "989 431 squared".
The square of 989 431 is 978 973 703 761 because 989 431 × 989 431 = 989 4312 = 978 973 703 761.
As a consequence, 989 431 is the square root of 978 973 703 761.
The multiples of 989 431 are all integers evenly divisible by 989 431, that is all numbers such that the remainder of the division by 989 431 is zero. There are infinitely many multiples of 989 431. The smallest multiples of 989 431 are: