879747978 has 32 divisors (see below), whose sum is σ = 1792296000. Its totient is φ = 287804160.

The previous prime is 879747961. The next prime is 879747991.

879747978 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180226 + ... + 185042.

It is an arithmetic number, because the mean of its divisors is an integer number (56009250).

Almost surely, 2^879747978 is an apocalyptic number.

879747978 is an abundant number, since it is smaller than the sum of its proper divisors (912548022).

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

879747978 is a wasteful number, since it uses less digits than its factorization.

879747978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5382.

The product of its digits is 49787136, while the sum is 66.

The square root of 879747978 is about 29660.5458142631. The cubic root of 879747978 is about 958.1924821316.

The spelling of 879747978 in words is "eight hundred seventy-nine million, seven hundred forty-seven thousand, nine hundred seventy-eight".