979609920 has 112 divisors (see below), whose sum is σ = 3210690048. Its totient is φ = 252794880.

The previous prime is 979609909. The next prime is 979609973. The reversal of 979609920 is 29906979.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13302 + ... + 46218.

Almost surely, 2^979609920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 979609920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1605345024).

979609920 is an abundant number, since it is smaller than the sum of its proper divisors (2231080128).

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

979609920 is a wasteful number, since it uses less digits than its factorization.

979609920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32968 (or 32958 counting only the distinct ones).

The product of its (nonzero) digits is 551124, while the sum is 51.

The square root of 979609920 is about 31298.7207406309. The cubic root of 979609920 is about 993.1565811158.

It can be divided in two parts, 97960 and 9920, that added together give a triangular number (107880 = T₄₆₄).

The spelling of 979609920 in words is "nine hundred seventy-nine million, six hundred nine thousand, nine hundred twenty".