809056 has 24 divisors (see below), whose sum is σ = 1613304. Its totient is φ = 399360.

The previous prime is 809051. The next prime is 809063. The reversal of 809056 is 650908.

It is a super-2 number, since 2×809056² = 1309143222272, which contains 22 as substring.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4096 + ... + 4288.

It is an arithmetic number, because the mean of its divisors is an integer number (67221).

2⁸⁰⁹⁰⁵⁶ is an apocalyptic number.

It is an amenable number.

809056 is a deficient number, since it is larger than the sum of its proper divisors (804248).

809056 is a wasteful number, since it uses less digits than its factorization.

809056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334 (or 326 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 809056 is about 899.4754026654. The cubic root of 809056 is about 93.1807484167.

The spelling of 809056 in words is "eight hundred nine thousand, fifty-six".