It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 802 401 774 is not a prime number.
For example, 802 401 774 can be divided by 2: 802 401 774 / 2 = 401 200 887.
For 802 401 774 to be a prime number, it would have been required that 802 401 774 has only two divisors, i.e., itself and 1.
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802 401 774 is an even number, because it is evenly divisible by 2: 802 401 774 / 2 = 401 200 887.
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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 802 401 774 is about 28 326.697.
Thus, the square root of 802 401 774 is not an integer, and therefore 802 401 774 is not a square number.
The square of a number (here 802 401 774) is the result of the product of this number (802 401 774) by itself (i.e., 802 401 774 × 802 401 774); the square of 802 401 774 is sometimes called "raising 802 401 774 to the power 2", or "802 401 774 squared".
The square of 802 401 774 is 643 848 606 918 347 136 because 802 401 774 × 802 401 774 = 802 401 7742 = 643 848 606 918 347 136.
As a consequence, 802 401 774 is the square root of 643 848 606 918 347 136.
802 401 774 is a number with 9 digits.
The multiples of 802 401 774 are all integers evenly divisible by 802 401 774, that is all numbers such that the remainder of the division by 802 401 774 is zero. There are infinitely many multiples of 802 401 774. The smallest multiples of 802 401 774 are: