It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 802 002 804 is not a prime number.
For example, 802 002 804 can be divided by 2: 802 002 804 / 2 = 401 001 402.
For 802 002 804 to be a prime number, it would have been required that 802 002 804 has only two divisors, i.e., itself and 1.
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802 002 804 is an even number, because it is evenly divisible by 2: 802 002 804 / 2 = 401 001 402.
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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 802 002 804 is about 28 319.654.
Thus, the square root of 802 002 804 is not an integer, and therefore 802 002 804 is not a square number.
The square of a number (here 802 002 804) is the result of the product of this number (802 002 804) by itself (i.e., 802 002 804 × 802 002 804); the square of 802 002 804 is sometimes called "raising 802 002 804 to the power 2", or "802 002 804 squared".
The square of 802 002 804 is 643 208 497 623 862 400 because 802 002 804 × 802 002 804 = 802 002 8042 = 643 208 497 623 862 400.
As a consequence, 802 002 804 is the square root of 643 208 497 623 862 400.
802 002 804 is a number with 9 digits.
The multiples of 802 002 804 are all integers evenly divisible by 802 002 804, that is all numbers such that the remainder of the division by 802 002 804 is zero. There are infinitely many multiples of 802 002 804. The smallest multiples of 802 002 804 are: