879623081 has 4 divisors (see below), whose sum is σ = 879942612. Its totient is φ = 879303552.

The previous prime is 879623077. The next prime is 879623083. The reversal of 879623081 is 180326978.

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

It can be written as a sum of positive squares in 2 ways, for example, as 384160000 + 495463081 = 19600^2 + 22259^2 .

It is a cyclic number.

It is not a de Polignac number, because 879623081 - 2² = 879623077 is a prime.

It is a super-2 number, since 2×879623081² = 1547473529255865122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (879623083) 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 3 ways as a sum of consecutive naturals, for example, 155600 + ... + 161153.

It is an arithmetic number, because the mean of its divisors is an integer number (219985653).

Almost surely, 2^879623081 is an apocalyptic number.

It is an amenable number.

879623081 is a deficient number, since it is larger than the sum of its proper divisors (319531).

879623081 is a wasteful number, since it uses less digits than its factorization.

879623081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319530.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 879623081 is about 29658.4402995168. The cubic root of 879623081 is about 958.1471354212.

The spelling of 879623081 in words is "eight hundred seventy-nine million, six hundred twenty-three thousand, eighty-one".