808444008440 has 32 divisors (see below), whose sum is σ = 1821750968160. Its totient is φ = 322888368000.

The previous prime is 808444008391. The next prime is 808444008451. The reversal of 808444008440 is 44800444808.

It is a junction number, because it is equal to n+sod(n) for n = 808444008391 and 808444008400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15261836 + ... + 15314715.

It is an arithmetic number, because the mean of its divisors is an integer number (56929717755).

Almost surely, 2^808444008440 is an apocalyptic number.

It is an amenable number.

808444008440 is an abundant number, since it is smaller than the sum of its proper divisors (1013306959720).

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

808444008440 is a wasteful number, since it uses less digits than its factorization.

808444008440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30577223 (or 30577219 counting only the distinct ones).

The product of its (nonzero) digits is 524288, while the sum is 44.

The spelling of 808444008440 in words is "eight hundred eight billion, four hundred forty-four million, eight thousand, four hundred forty".