It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 444 398 is not a prime number.
For example, 444 398 can be divided by 2: 444 398 / 2 = 222 199.
For 444 398 to be a prime number, it would have been required that 444 398 has only two divisors, i.e., itself and 1.
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444 398 is an even number, because it is evenly divisible by 2: 444 398 / 2 = 222 199.
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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 444 398 is about 666.632.
Thus, the square root of 444 398 is not an integer, and therefore 444 398 is not a square number.
The square of a number (here 444 398) is the result of the product of this number (444 398) by itself (i.e., 444 398 × 444 398); the square of 444 398 is sometimes called "raising 444 398 to the power 2", or "444 398 squared".
The square of 444 398 is 197 489 582 404 because 444 398 × 444 398 = 444 3982 = 197 489 582 404.
As a consequence, 444 398 is the square root of 197 489 582 404.
The multiples of 444 398 are all integers evenly divisible by 444 398, that is all numbers such that the remainder of the division by 444 398 is zero. There are infinitely many multiples of 444 398. The smallest multiples of 444 398 are: