809793493 has 2 divisors, whose sum is σ = 809793494. Its totient is φ = 809793492.

The previous prime is 809793473. The next prime is 809793533. The reversal of 809793493 is 394397908.

809793493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 603095364 + 206698129 = 24558^2 + 14377^2 .

It is a cyclic number.

It is not a de Polignac number, because 809793493 - 2⁹ = 809792981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 809793493.

It is a congruent number.

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, 404896746 + 404896747.

It is an arithmetic number, because the mean of its divisors is an integer number (404896747).

Almost surely, 2^809793493 is an apocalyptic number.

It is an amenable number.

809793493 is a deficient number, since it is larger than the sum of its proper divisors (1).

809793493 is an equidigital number, since it uses as much as digits as its factorization.

809793493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 52.

The square root of 809793493 is about 28456.8707520697. The cubic root of 809793493 is about 932.0905271194.

The spelling of 809793493 in words is "eight hundred nine million, seven hundred ninety-three thousand, four hundred ninety-three".