979872 has 48 divisors (see below), whose sum is σ = 2630880. Its totient is φ = 319232.

The previous prime is 979831. The next prime is 979873. The reversal of 979872 is 278979.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (979873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5578 + ... + 5750.

It is an arithmetic number, because the mean of its divisors is an integer number (54810).

2⁹⁷⁹⁸⁷² 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 979872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1315440).

979872 is an abundant number, since it is smaller than the sum of its proper divisors (1651008).

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

979872 is a wasteful number, since it uses less digits than its factorization.

979872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 237 counting only the distinct ones).

The product of its digits is 63504, while the sum is 42.

The square root of 979872 is about 989.8848417872. The cubic root of 979872 is about 99.3245141288.

It can be divided in two parts, 9798 and 72, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 979872 in words is "nine hundred seventy-nine thousand, eight hundred seventy-two".