979992 has 64 divisors (see below), whose sum is σ = 2940000. Its totient is φ = 300672.

The previous prime is 979987. The next prime is 980027. The reversal of 979992 is 299979.

979992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2634 + ... + 2982.

2⁹⁷⁹⁹⁹² 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 979992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1470000).

979992 is an abundant number, since it is smaller than the sum of its proper divisors (1960008).

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

979992 is a wasteful number, since it uses less digits than its factorization.

979992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 367 counting only the distinct ones).

The product of its digits is 91854, while the sum is 45.

The square root of 979992 is about 989.9454530427. The cubic root of 979992 is about 99.3285685546.

The spelling of 979992 in words is "nine hundred seventy-nine thousand, nine hundred ninety-two".