809073 has 6 divisors (see below), whose sum is σ = 1168674. Its totient is φ = 539376.

The previous prime is 809063. The next prime is 809087. The reversal of 809073 is 370908.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 567009 + 242064 = 753^2 + 492^2 .

It is not a de Polignac number, because 809073 - 2⁵ = 809041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44940 + ... + 44957.

It is an arithmetic number, because the mean of its divisors is an integer number (194779).

2⁸⁰⁹⁰⁷³ is an apocalyptic number.

It is an amenable number.

809073 is a deficient number, since it is larger than the sum of its proper divisors (359601).

809073 is a wasteful number, since it uses less digits than its factorization.

809073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89903 (or 89900 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 809073 is about 899.4848525684. The cubic root of 809073 is about 93.1814010545.

The spelling of 809073 in words is "eight hundred nine thousand, seventy-three".