979861884 has 12 divisors (see below), whose sum is σ = 2286344424. Its totient is φ = 326620624.

The previous prime is 979861879. The next prime is 979861891. The reversal of 979861884 is 488168979.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40827567 + ... + 40827590.

It is an arithmetic number, because the mean of its divisors is an integer number (190528702).

Almost surely, 2^979861884 is an apocalyptic number.

It is an amenable number.

979861884 is an abundant number, since it is smaller than the sum of its proper divisors (1306482540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

979861884 is a wasteful number, since it uses less digits than its factorization.

979861884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81655164 (or 81655162 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 60.

The square root of 979861884 is about 31302.7456303756. The cubic root of 979861884 is about 993.2417232553.

The spelling of 979861884 in words is "nine hundred seventy-nine million, eight hundred sixty-one thousand, eight hundred eighty-four".