It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 802 492 is not a prime number.
For example, 802 492 can be divided by 2: 802 492 / 2 = 401 246.
For 802 492 to be a prime number, it would have been required that 802 492 has only two divisors, i.e., itself and 1.
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802 492 is an even number, because it is evenly divisible by 2: 802 492 / 2 = 401 246.
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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 802 492 is about 895.819.
Thus, the square root of 802 492 is not an integer, and therefore 802 492 is not a square number.
The square of a number (here 802 492) is the result of the product of this number (802 492) by itself (i.e., 802 492 × 802 492); the square of 802 492 is sometimes called "raising 802 492 to the power 2", or "802 492 squared".
The square of 802 492 is 643 993 410 064 because 802 492 × 802 492 = 802 4922 = 643 993 410 064.
As a consequence, 802 492 is the square root of 643 993 410 064.
The multiples of 802 492 are all integers evenly divisible by 802 492, that is all numbers such that the remainder of the division by 802 492 is zero. There are infinitely many multiples of 802 492. The smallest multiples of 802 492 are: