879121978 has 32 divisors (see below), whose sum is σ = 1528668288. Its totient is φ = 371400000.

The previous prime is 879121949. The next prime is 879121993.

879121978 is nontrivially palindromic in base 10.

879121978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353676 + ... + 356152.

It is an arithmetic number, because the mean of its divisors is an integer number (47770884).

Almost surely, 2^879121978 is an apocalyptic number.

879121978 is a deficient number, since it is larger than the sum of its proper divisors (649546310).

879121978 is a wasteful number, since it uses less digits than its factorization.

879121978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2838.

The product of its digits is 508032, while the sum is 52.

The square root of 879121978 is about 29649.9911973005. The cubic root of 879121978 is about 957.9651553524.

The spelling of 879121978 in words is "eight hundred seventy-nine million, one hundred twenty-one thousand, nine hundred seventy-eight".