879726979 has 4 divisors (see below), whose sum is σ = 879832840. Its totient is φ = 879621120.

The previous prime is 879726893. The next prime is 879726983. The reversal of 879726979 is 979627978.

879726979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-879726979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 879726979.

It is not an unprimeable number, because it can be changed into a prime (879726779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39294 + ... + 57475.

It is an arithmetic number, because the mean of its divisors is an integer number (219958210).

Almost surely, 2^879726979 is an apocalyptic number.

879726979 is a deficient number, since it is larger than the sum of its proper divisors (105861).

879726979 is an equidigital number, since it uses as much as digits as its factorization.

879726979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105860.

The product of its digits is 24004512, while the sum is 64.

The square root of 879726979 is about 29660.1918233851. The cubic root of 879726979 is about 958.1848582648.

Subtracting 879726979 from its reverse (979627978), we obtain a palindrome (99900999).

The spelling of 879726979 in words is "eight hundred seventy-nine million, seven hundred twenty-six thousand, nine hundred seventy-nine".