979823 has 16 divisors (see below), whose sum is σ = 1149120. Its totient is φ = 827904.

The previous prime is 979819. The next prime is 979831. The reversal of 979823 is 328979.

It is a cyclic number.

It is not a de Polignac number, because 979823 - 2² = 979819 is a prime.

It is a super-2 number, since 2×979823² = 1920106222658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8615 + ... + 8727.

It is an arithmetic number, because the mean of its divisors is an integer number (71820).

2⁹⁷⁹⁸²³ is an apocalyptic number.

979823 is a deficient number, since it is larger than the sum of its proper divisors (169297).

979823 is a wasteful number, since it uses less digits than its factorization.

979823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178.

The product of its digits is 27216, while the sum is 38.

The square root of 979823 is about 989.8600911240. The cubic root of 979823 is about 99.3228584763.

The spelling of 979823 in words is "nine hundred seventy-nine thousand, eight hundred twenty-three".