840086808 has 32 divisors (see below), whose sum is σ = 2291146560. Its totient is φ = 254571680.

The previous prime is 840086801. The next prime is 840086809. The reversal of 840086808 is 808680048.

It is a self number, because there is not a number n which added to its sum of digits gives 840086808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840086801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1590810 + ... + 1591337.

It is an arithmetic number, because the mean of its divisors is an integer number (71598330).

Almost surely, 2^840086808 is an apocalyptic number.

840086808 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

840086808 is an abundant number, since it is smaller than the sum of its proper divisors (1451059752).

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

840086808 is a wasteful number, since it uses less digits than its factorization.

840086808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3182167 (or 3182163 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 42.

The square root of 840086808 is about 28984.2510339667. The cubic root of 840086808 is about 943.5712976087.

The spelling of 840086808 in words is "eight hundred forty million, eighty-six thousand, eight hundred eight".