It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 494 838 is not a prime number.
For example, 494 838 can be divided by 2: 494 838 / 2 = 247 419.
For 494 838 to be a prime number, it would have been required that 494 838 has only two divisors, i.e., itself and 1.
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494 838 is an even number, because it is evenly divisible by 2: 494 838 / 2 = 247 419.
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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 494 838 is about 703.447.
Thus, the square root of 494 838 is not an integer, and therefore 494 838 is not a square number.
The square of a number (here 494 838) is the result of the product of this number (494 838) by itself (i.e., 494 838 × 494 838); the square of 494 838 is sometimes called "raising 494 838 to the power 2", or "494 838 squared".
The square of 494 838 is 244 864 646 244 because 494 838 × 494 838 = 494 8382 = 244 864 646 244.
As a consequence, 494 838 is the square root of 244 864 646 244.
The multiples of 494 838 are all integers evenly divisible by 494 838, that is all numbers such that the remainder of the division by 494 838 is zero. There are infinitely many multiples of 494 838. The smallest multiples of 494 838 are: