It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 988 393 is not a prime number.
For example, 988 393 can be divided by 7: 988 393 / 7 = 141 199.
For 988 393 to be a prime number, it would have been required that 988 393 has only two divisors, i.e., itself and 1.
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988 393 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 988 393 is about 994.180.
Thus, the square root of 988 393 is not an integer, and therefore 988 393 is not a square number.
The square of a number (here 988 393) is the result of the product of this number (988 393) by itself (i.e., 988 393 × 988 393); the square of 988 393 is sometimes called "raising 988 393 to the power 2", or "988 393 squared".
The square of 988 393 is 976 920 722 449 because 988 393 × 988 393 = 988 3932 = 976 920 722 449.
As a consequence, 988 393 is the square root of 976 920 722 449.
The multiples of 988 393 are all integers evenly divisible by 988 393, that is all numbers such that the remainder of the division by 988 393 is zero. There are infinitely many multiples of 988 393. The smallest multiples of 988 393 are: