808961839 has 8 divisors (see below), whose sum is σ = 924775200. Its totient is φ = 693210336.

The previous prime is 808961831. The next prime is 808961849. The reversal of 808961839 is 938169808.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 808961839 - 2³ = 808961831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808961831) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17157 + ... + 43729.

It is an arithmetic number, because the mean of its divisors is an integer number (115596900).

Almost surely, 2^808961839 is an apocalyptic number.

808961839 is a deficient number, since it is larger than the sum of its proper divisors (115813361).

808961839 is a wasteful number, since it uses less digits than its factorization.

808961839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30929.

The product of its (nonzero) digits is 746496, while the sum is 52.

The square root of 808961839 is about 28442.2544640892. The cubic root of 808961839 is about 931.7713336702.

The spelling of 808961839 in words is "eight hundred eight million, nine hundred sixty-one thousand, eight hundred thirty-nine".