809036 has 12 divisors (see below), whose sum is σ = 1423128. Its totient is φ = 402432.

The previous prime is 809023. The next prime is 809041. The reversal of 809036 is 630908.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 808996 and 809014.

It is a congruent number.

It is an unprimeable number.

809036 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635 + ... + 1421.

It is an arithmetic number, because the mean of its divisors is an integer number (118594).

2⁸⁰⁹⁰³⁶ is an apocalyptic number.

It is an amenable number.

809036 is a deficient number, since it is larger than the sum of its proper divisors (614092).

809036 is a wasteful number, since it uses less digits than its factorization.

809036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048 (or 1046 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 809036 is about 899.4642850052. The cubic root of 809036 is about 93.1799805958.

The spelling of 809036 in words is "eight hundred nine thousand, thirty-six".