9979556589 has 16 divisors (see below), whose sum is σ = 15294340800. Its totient is φ = 6423622128.

The previous prime is 9979556581. The next prime is 9979556621. The reversal of 9979556589 is 9856559799.

It is not a de Polignac number, because 9979556589 - 2³ = 9979556581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9979556581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6371859 + ... + 6373424.

It is an arithmetic number, because the mean of its divisors is an integer number (955896300).

Almost surely, 2^9979556589 is an apocalyptic number.

It is an amenable number.

9979556589 is a deficient number, since it is larger than the sum of its proper divisors (5314784211).

9979556589 is a wasteful number, since it uses less digits than its factorization.

9979556589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12745321 (or 12745315 counting only the distinct ones).

The product of its digits is 275562000, while the sum is 72.

The square root of 9979556589 is about 99897.7306499002. The cubic root of 9979556589 is about 2152.9655553111.

The spelling of 9979556589 in words is "nine billion, nine hundred seventy-nine million, five hundred fifty-six thousand, five hundred eighty-nine".