It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 802 494 is not a prime number.
For example, 802 494 can be divided by 2: 802 494 / 2 = 401 247.
For 802 494 to be a prime number, it would have been required that 802 494 has only two divisors, i.e., itself and 1.
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802 494 is an even number, because it is evenly divisible by 2: 802 494 / 2 = 401 247.
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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 802 494 is about 895.820.
Thus, the square root of 802 494 is not an integer, and therefore 802 494 is not a square number.
The square of a number (here 802 494) is the result of the product of this number (802 494) by itself (i.e., 802 494 × 802 494); the square of 802 494 is sometimes called "raising 802 494 to the power 2", or "802 494 squared".
The square of 802 494 is 643 996 620 036 because 802 494 × 802 494 = 802 4942 = 643 996 620 036.
As a consequence, 802 494 is the square root of 643 996 620 036.
The multiples of 802 494 are all integers evenly divisible by 802 494, that is all numbers such that the remainder of the division by 802 494 is zero. There are infinitely many multiples of 802 494. The smallest multiples of 802 494 are: