979938 has 40 divisors (see below), whose sum is σ = 2299968. Its totient is φ = 311256.

The previous prime is 979921. The next prime is 979949. The reversal of 979938 is 839979.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 979893 and 979902.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 979938.

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 19 ways as a sum of consecutive naturals, for example, 3595 + ... + 3857.

2⁹⁷⁹⁹³⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 979938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1149984).

979938 is an abundant number, since it is smaller than the sum of its proper divisors (1320030).

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

979938 is a wasteful number, since it uses less digits than its factorization.

979938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 291 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 979938 is about 989.9181784370. The cubic root of 979938 is about 99.3267441040.

The spelling of 979938 in words is "nine hundred seventy-nine thousand, nine hundred thirty-eight".