It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 990 348 is not a prime number.
For example, 990 348 can be divided by 2: 990 348 / 2 = 495 174.
For 990 348 to be a prime number, it would have been required that 990 348 has only two divisors, i.e., itself and 1.
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990 348 is an even number, because it is evenly divisible by 2: 990 348 / 2 = 495 174.
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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 990 348 is about 995.162.
Thus, the square root of 990 348 is not an integer, and therefore 990 348 is not a square number.
The square of a number (here 990 348) is the result of the product of this number (990 348) by itself (i.e., 990 348 × 990 348); the square of 990 348 is sometimes called "raising 990 348 to the power 2", or "990 348 squared".
The square of 990 348 is 980 789 161 104 because 990 348 × 990 348 = 990 3482 = 980 789 161 104.
As a consequence, 990 348 is the square root of 980 789 161 104.
The multiples of 990 348 are all integers evenly divisible by 990 348, that is all numbers such that the remainder of the division by 990 348 is zero. There are infinitely many multiples of 990 348. The smallest multiples of 990 348 are: