878989878 has 24 divisors (see below), whose sum is σ = 2050976928. Its totient is φ = 270458352.

The previous prime is 878989849. The next prime is 878989907.

878989878 is nontrivially palindromic in base 10.

878989878 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an interprime number because it is at equal distance from previous prime (878989849) and next prime (878989907).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1877950 + ... + 1878417.

It is an arithmetic number, because the mean of its divisors is an integer number (85457372).

Almost surely, 2^878989878 is an apocalyptic number.

878989878 is an abundant number, since it is smaller than the sum of its proper divisors (1171987050).

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

878989878 is a wasteful number, since it uses less digits than its factorization.

878989878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3756388 (or 3756385 counting only the distinct ones).

The product of its digits is 130056192, while the sum is 72.

The square root of 878989878 is about 29647.7634569625. The cubic root of 878989878 is about 957.9171705300.

The spelling of 878989878 in words is "eight hundred seventy-eight million, nine hundred eighty-nine thousand, eight hundred seventy-eight".