It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 988 418 is not a prime number.
For example, 988 418 can be divided by 2: 988 418 / 2 = 494 209.
For 988 418 to be a prime number, it would have been required that 988 418 has only two divisors, i.e., itself and 1.
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988 418 is an even number, because it is evenly divisible by 2: 988 418 / 2 = 494 209.
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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 988 418 is about 994.192.
Thus, the square root of 988 418 is not an integer, and therefore 988 418 is not a square number.
The square of a number (here 988 418) is the result of the product of this number (988 418) by itself (i.e., 988 418 × 988 418); the square of 988 418 is sometimes called "raising 988 418 to the power 2", or "988 418 squared".
The square of 988 418 is 976 970 142 724 because 988 418 × 988 418 = 988 4182 = 976 970 142 724.
As a consequence, 988 418 is the square root of 976 970 142 724.
The multiples of 988 418 are all integers evenly divisible by 988 418, that is all numbers such that the remainder of the division by 988 418 is zero. There are infinitely many multiples of 988 418. The smallest multiples of 988 418 are: