104831979 has 32 divisors (see below), whose sum is σ = 173099520. Its totient is φ = 55060992.

The previous prime is 104831971. The next prime is 104831981. The reversal of 104831979 is 979138401.

It is a happy number.

It is not a de Polignac number, because 104831979 - 2³ = 104831971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 104831979.

It is not an unprimeable number, because it can be changed into a prime (104831971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11937 + ... + 18765.

It is an arithmetic number, because the mean of its divisors is an integer number (5409360).

Almost surely, 2^104831979 is an apocalyptic number.

104831979 is a deficient number, since it is larger than the sum of its proper divisors (68267541).

104831979 is a wasteful number, since it uses less digits than its factorization.

104831979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6899.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 104831979 is about 10238.7488981809. The cubic root of 104831979 is about 471.5176218896.

The spelling of 104831979 in words is "one hundred four million, eight hundred thirty-one thousand, nine hundred seventy-nine".