809085 has 8 divisors (see below), whose sum is σ = 1294560. Its totient is φ = 431504.

The previous prime is 809063. The next prime is 809087. The reversal of 809085 is 580908.

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 809085 - 2⁷ = 808957 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 809085.

It is not an unprimeable number, because it can be changed into a prime (809087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26955 + ... + 26984.

It is an arithmetic number, because the mean of its divisors is an integer number (161820).

2⁸⁰⁹⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

809085 is a deficient number, since it is larger than the sum of its proper divisors (485475).

809085 is a wasteful number, since it uses less digits than its factorization.

809085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53947.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 809085 is about 899.4915230284. The cubic root of 809085 is about 93.1818617345.

The spelling of 809085 in words is "eight hundred nine thousand, eighty-five".