808000809 has 32 divisors (see below), whose sum is σ = 1350743040. Its totient is φ = 417374400.

The previous prime is 808000801. The next prime is 808000883. The reversal of 808000809 is 908000808.

It is not a de Polignac number, because 808000809 - 2³ = 808000801 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 808000809.

It is not an unprimeable number, because it can be changed into a prime (808000801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31579 + ... + 51119.

It is an arithmetic number, because the mean of its divisors is an integer number (42210720).

Almost surely, 2^808000809 is an apocalyptic number.

It is an amenable number.

808000809 is a deficient number, since it is larger than the sum of its proper divisors (542742231).

808000809 is a wasteful number, since it uses less digits than its factorization.

808000809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19741.

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 808000809 is about 28425.3550373606. The cubic root of 808000809 is about 931.4022124122.

Subtracting 808000809 from its reverse (908000808), we obtain a palindrome (99999999).

The spelling of 808000809 in words is "eight hundred eight million, eight hundred nine", and thus it is an aban number.