It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 84 009 004 is not a prime number.
For example, 84 009 004 can be divided by 2: 84 009 004 / 2 = 42 004 502.
For 84 009 004 to be a prime number, it would have been required that 84 009 004 has only two divisors, i.e., itself and 1.
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84 009 004 is an even number, because it is evenly divisible by 2: 84 009 004 / 2 = 42 004 502.
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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 84 009 004 is about 9 165.643.
Thus, the square root of 84 009 004 is not an integer, and therefore 84 009 004 is not a square number.
The square of a number (here 84 009 004) is the result of the product of this number (84 009 004) by itself (i.e., 84 009 004 × 84 009 004); the square of 84 009 004 is sometimes called "raising 84 009 004 to the power 2", or "84 009 004 squared".
The square of 84 009 004 is 7 057 512 753 072 016 because 84 009 004 × 84 009 004 = 84 009 0042 = 7 057 512 753 072 016.
As a consequence, 84 009 004 is the square root of 7 057 512 753 072 016.
84 009 004 is a number with 8 digits.
The multiples of 84 009 004 are all integers evenly divisible by 84 009 004, that is all numbers such that the remainder of the division by 84 009 004 is zero. There are infinitely many multiples of 84 009 004. The smallest multiples of 84 009 004 are: