808021924 has 12 divisors (see below), whose sum is σ = 1475518464. Its totient is φ = 386445224.

The previous prime is 808021859. The next prime is 808021927. The reversal of 808021924 is 429120808.

It is a self number, because there is not a number n which added to its sum of digits gives 808021924.

It is not an unprimeable number, because it can be changed into a prime (808021927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4391332 + ... + 4391515.

It is an arithmetic number, because the mean of its divisors is an integer number (122959872).

Almost surely, 2^808021924 is an apocalyptic number.

It is an amenable number.

808021924 is a deficient number, since it is larger than the sum of its proper divisors (667496540).

808021924 is a wasteful number, since it uses less digits than its factorization.

808021924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8782874 (or 8782872 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 808021924 is about 28425.7264463021. The cubic root of 808021924 is about 931.4103255998.

The spelling of 808021924 in words is "eight hundred eight million, twenty-one thousand, nine hundred twenty-four".