It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 938 998 is not a prime number.
For example, 938 998 can be divided by 2: 938 998 / 2 = 469 499.
For 938 998 to be a prime number, it would have been required that 938 998 has only two divisors, i.e., itself and 1.
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938 998 is an even number, because it is evenly divisible by 2: 938 998 / 2 = 469 499.
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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 938 998 is about 969.019.
Thus, the square root of 938 998 is not an integer, and therefore 938 998 is not a square number.
The square of a number (here 938 998) is the result of the product of this number (938 998) by itself (i.e., 938 998 × 938 998); the square of 938 998 is sometimes called "raising 938 998 to the power 2", or "938 998 squared".
The square of 938 998 is 881 717 244 004 because 938 998 × 938 998 = 938 9982 = 881 717 244 004.
As a consequence, 938 998 is the square root of 881 717 244 004.
The multiples of 938 998 are all integers evenly divisible by 938 998, that is all numbers such that the remainder of the division by 938 998 is zero. There are infinitely many multiples of 938 998. The smallest multiples of 938 998 are: