809086 has 8 divisors (see below), whose sum is σ = 1217880. Its totient is φ = 403128.

The previous prime is 809063. The next prime is 809087. The reversal of 809086 is 680908.

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

It is an Ulam number.

It is a congruent number.

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

809086 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 285 + ... + 1303.

It is an arithmetic number, because the mean of its divisors is an integer number (152235).

2⁸⁰⁹⁰⁸⁶ is an apocalyptic number.

809086 is a deficient number, since it is larger than the sum of its proper divisors (408794).

809086 is a wasteful number, since it uses less digits than its factorization.

809086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 809086 is about 899.4920788979. The cubic root of 809086 is about 93.1819001243.

The spelling of 809086 in words is "eight hundred nine thousand, eighty-six".