808109 has 4 divisors (see below), whose sum is σ = 810720. Its totient is φ = 805500.

The previous prime is 808097. The next prime is 808111. The reversal of 808109 is 901808.

808109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-808109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808169) 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, 767 + ... + 1484.

It is an arithmetic number, because the mean of its divisors is an integer number (202680).

2⁸⁰⁸¹⁰⁹ is an apocalyptic number.

It is an amenable number.

808109 is a deficient number, since it is larger than the sum of its proper divisors (2611).

808109 is a wasteful number, since it uses less digits than its factorization.

808109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 808109 is about 898.9488305794. The cubic root of 808109 is about 93.1443782024.

The spelling of 808109 in words is "eight hundred eight thousand, one hundred nine".