979841856 has 112 divisors (see below), whose sum is σ = 3118876160. Its totient is φ = 265213440.

The previous prime is 979841839. The next prime is 979841857. The reversal of 979841856 is 658148979.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 979841796 and 979841805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979841857) 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, 6351 + ... + 44721.

Almost surely, 2^979841856 is an apocalyptic number.

979841856 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 979841856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1559438080).

979841856 is an abundant number, since it is smaller than the sum of its proper divisors (2139034304).

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

979841856 is a wasteful number, since it uses less digits than its factorization.

979841856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38412 (or 38402 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 57.

The square root of 979841856 is about 31302.4257207009. The cubic root of 979841856 is about 993.2349560496.

The spelling of 979841856 in words is "nine hundred seventy-nine million, eight hundred forty-one thousand, eight hundred fifty-six".