9679988879 has 8 divisors (see below), whose sum is σ = 10597571280. Its totient is φ = 8768670400.

The previous prime is 9679988873. The next prime is 9679988891. The reversal of 9679988879 is 9788899769.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9679988879 - 2²⁰ = 9678940303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9679988873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1562744 + ... + 1568925.

It is an arithmetic number, because the mean of its divisors is an integer number (1324696410).

Almost surely, 2^9679988879 is an apocalyptic number.

9679988879 is a deficient number, since it is larger than the sum of its proper divisors (917582401).

9679988879 is a wasteful number, since it uses less digits than its factorization.

9679988879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3131961.

The product of its digits is 987614208, while the sum is 80.

The square root of 9679988879 is about 98386.9344933564. The cubic root of 9679988879 is about 2131.2036573785.

The spelling of 9679988879 in words is "nine billion, six hundred seventy-nine million, nine hundred eighty-eight thousand, eight hundred seventy-nine".