Is 489604079 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 489 604 079 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 489 604 079, the only two divisors are 1 and 489 604 079. Therefore 489 604 079 is a prime number.
As a consequence, 489 604 079 is only a multiple of 1 and 489 604 079.
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Since 489604079 is a prime number, 489604079 is also a deficient number, that is to say 489604079 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 489604079 without 489604079 itself (that is 1, by definition!).