809793473 has 2 divisors, whose sum is σ = 809793474. Its totient is φ = 809793472.

The previous prime is 809793469. The next prime is 809793493. The reversal of 809793473 is 374397908.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 807866929 + 1926544 = 28423^2 + 1388^2 .

It is a cyclic number.

It is not a de Polignac number, because 809793473 - 2² = 809793469 is a prime.

It is not a weakly prime, because it can be changed into another prime (809793493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404896736 + 404896737.

It is an arithmetic number, because the mean of its divisors is an integer number (404896737).

Almost surely, 2^809793473 is an apocalyptic number.

It is an amenable number.

809793473 is a deficient number, since it is larger than the sum of its proper divisors (1).

809793473 is an equidigital number, since it uses as much as digits as its factorization.

809793473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1143072, while the sum is 50.

The square root of 809793473 is about 28456.8704006607. The cubic root of 809793473 is about 932.0905194459.

The spelling of 809793473 in words is "eight hundred nine million, seven hundred ninety-three thousand, four hundred seventy-three".