879969978 has 24 divisors (see below), whose sum is σ = 1907631648. Its totient is φ = 293164872.

The previous prime is 879969977. The next prime is 879970057.

879969978 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (879969977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23851 + ... + 48257.

It is an arithmetic number, because the mean of its divisors is an integer number (79484652).

Almost surely, 2^879969978 is an apocalyptic number.

879969978 is an abundant number, since it is smaller than the sum of its proper divisors (1027661670).

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

879969978 is a wasteful number, since it uses less digits than its factorization.

879969978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26418 (or 26415 counting only the distinct ones).

The product of its digits is 123451776, while the sum is 72.

The square root of 879969978 is about 29664.2879233600. The cubic root of 879969978 is about 958.2730737123.

The spelling of 879969978 in words is "eight hundred seventy-nine million, nine hundred sixty-nine thousand, nine hundred seventy-eight".