839906171832 has 128 divisors (see below), whose sum is σ = 2620726133760. Its totient is φ = 218393763840.

The previous prime is 839906171813. The next prime is 839906171873. The reversal of 839906171832 is 238171609938.

It is a super-2 number, since 2×839906171832² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2553193 + ... + 2863320.

It is an arithmetic number, because the mean of its divisors is an integer number (20474422920).

Almost surely, 2^839906171832 is an apocalyptic number.

It is an amenable number.

839906171832 is an abundant number, since it is smaller than the sum of its proper divisors (1780819961928).

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

839906171832 is a wasteful number, since it uses less digits than its factorization.

839906171832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5416613 (or 5416609 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 57.

The spelling of 839906171832 in words is "eight hundred thirty-nine billion, nine hundred six million, one hundred seventy-one thousand, eight hundred thirty-two".