885139919 has 4 divisors (see below), whose sum is σ = 885324144. Its totient is φ = 884955696.

The previous prime is 885139891. The next prime is 885139933. The reversal of 885139919 is 919931588.

885139919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 885139919 - 2²⁸ = 616704463 is a prime.

It is a super-2 number, since 2×885139919² = 1566945352414653122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (885139979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84707 + ... + 94580.

It is an arithmetic number, because the mean of its divisors is an integer number (221331036).

Almost surely, 2^885139919 is an apocalyptic number.

885139919 is a deficient number, since it is larger than the sum of its proper divisors (184225).

885139919 is a wasteful number, since it uses less digits than its factorization.

885139919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184224.

The product of its digits is 699840, while the sum is 53.

The square root of 885139919 is about 29751.3011312111. The cubic root of 885139919 is about 960.1460711614.

The spelling of 885139919 in words is "eight hundred eighty-five million, one hundred thirty-nine thousand, nine hundred nineteen".