809793073 has 2 divisors, whose sum is σ = 809793074. Its totient is φ = 809793072.

The previous prime is 809793031. The next prime is 809793109. The reversal of 809793073 is 370397908.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 592289569 + 217503504 = 24337^2 + 14748^2 .

It is a cyclic number.

It is not a de Polignac number, because 809793073 - 2⁹ = 809792561 is a prime.

It is not a weakly prime, because it can be changed into another prime (809793473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404896536 + 404896537.

It is an arithmetic number, because the mean of its divisors is an integer number (404896537).

Almost surely, 2^809793073 is an apocalyptic number.

It is an amenable number.

809793073 is a deficient number, since it is larger than the sum of its proper divisors (1).

809793073 is an equidigital number, since it uses as much as digits as its factorization.

809793073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 809793073 is about 28456.8633724801. The cubic root of 809793073 is about 932.0903659762.

The spelling of 809793073 in words is "eight hundred nine million, seven hundred ninety-three thousand, seventy-three".