Is 444326789 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 444 326 789 is a prime number.
Indeed, the definition of a prime numbers is to have exactly two distinct positive divisors, 1 and itself. A number is a divisor of another number when the remainder of Euclid’s division of the second one by the first one is zero. Concerning the number 444 326 789, the only two divisors are 1 and 444 326 789. Therefore 444 326 789 is a prime number.
As a consequence, 444 326 789 is only a multiple of 1 and 444 326 789.
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Since 444326789 is a prime number, 444326789 is also a deficient number, that is to say 444326789 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 444326789 without 444326789 itself (that is 1, by definition!).