979540 has 48 divisors (see below), whose sum is σ = 2261952. Its totient is φ = 354816.

The previous prime is 979529. The next prime is 979541. The reversal of 979540 is 45979.

It is a super-2 number, since 2×979540² = 1918997223200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 979496 and 979505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979541) 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 15 ways as a sum of consecutive naturals, for example, 14587 + ... + 14653.

It is an arithmetic number, because the mean of its divisors is an integer number (47124).

2⁹⁷⁹⁵⁴⁰ 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 979540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1130976).

979540 is an abundant number, since it is smaller than the sum of its proper divisors (1282412).

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

979540 is a wasteful number, since it uses less digits than its factorization.

979540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 979540 is about 989.7171313057. The cubic root of 979540 is about 99.3132951588.

The spelling of 979540 in words is "nine hundred seventy-nine thousand, five hundred forty".