870802779 has 16 divisors (see below), whose sum is σ = 1447568640. Its totient is φ = 452364960.

The previous prime is 870802769. The next prime is 870802787. The reversal of 870802779 is 977208078.

It is not a de Polignac number, because 870802779 - 2⁴ = 870802763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (870802769) 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 15 ways as a sum of consecutive naturals, for example, 1884624 + ... + 1885085.

It is an arithmetic number, because the mean of its divisors is an integer number (90473040).

Almost surely, 2^870802779 is an apocalyptic number.

870802779 is a deficient number, since it is larger than the sum of its proper divisors (576765861).

870802779 is a wasteful number, since it uses less digits than its factorization.

870802779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3769730.

The product of its (nonzero) digits is 395136, while the sum is 48.

The square root of 870802779 is about 29509.3676482571. The cubic root of 870802779 is about 954.9338071680.

The spelling of 870802779 in words is "eight hundred seventy million, eight hundred two thousand, seven hundred seventy-nine".