808639712 has 48 divisors (see below), whose sum is σ = 1700092800. Its totient is φ = 377771520.

The previous prime is 808639703. The next prime is 808639721. The reversal of 808639712 is 217936808.

It is an interprime number because it is at equal distance from previous prime (808639703) and next prime (808639721).

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 7 ways as a sum of consecutive naturals, for example, 14714 + ... + 42822.

It is an arithmetic number, because the mean of its divisors is an integer number (35418600).

Almost surely, 2^808639712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 808639712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (850046400).

808639712 is an abundant number, since it is smaller than the sum of its proper divisors (891453088).

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

808639712 is a wasteful number, since it uses less digits than its factorization.

808639712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28179 (or 28171 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 808639712 is about 28436.5910755843. The cubic root of 808639712 is about 931.6476407516.

The spelling of 808639712 in words is "eight hundred eight million, six hundred thirty-nine thousand, seven hundred twelve".