8085809 has 8 divisors (see below), whose sum is σ = 8448960. Its totient is φ = 7728336.

The previous prime is 8085797. The next prime is 8085817. The reversal of 8085809 is 9085808.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8085809 - 2⁴ = 8085793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8085859) 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, 1634 + ... + 4340.

It is an arithmetic number, because the mean of its divisors is an integer number (1056120).

Almost surely, 2^8085809 is an apocalyptic number.

It is an amenable number.

8085809 is a deficient number, since it is larger than the sum of its proper divisors (363151).

8085809 is a wasteful number, since it uses less digits than its factorization.

8085809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2839.

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 8085809 is about 2843.5556966587. Note that the first 3 decimals coincide. The cubic root of 8085809 is about 200.7125334657.

Subtracting 8085809 from its reverse (9085808), we obtain a palindrome (999999).

The spelling of 8085809 in words is "eight million, eighty-five thousand, eight hundred nine".