979965 has 64 divisors (see below), whose sum is σ = 2142720. Its totient is φ = 414720.

The previous prime is 979949. The next prime is 979969. The reversal of 979965 is 569979.

It is not a de Polignac number, because 979965 - 2⁴ = 979949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 979965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979969) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16035 + ... + 16095.

It is an arithmetic number, because the mean of its divisors is an integer number (33480).

2⁹⁷⁹⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

979965 is an abundant number, since it is smaller than the sum of its proper divisors (1162755).

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

979965 is a wasteful number, since it uses less digits than its factorization.

979965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 93 counting only the distinct ones).

The product of its digits is 153090, while the sum is 45.

The square root of 979965 is about 989.9318158338. The cubic root of 979965 is about 99.3276563377.

The spelling of 979965 in words is "nine hundred seventy-nine thousand, nine hundred sixty-five".