809893013 has 2 divisors, whose sum is σ = 809893014. Its totient is φ = 809893012.

The previous prime is 809892991. The next prime is 809893057. The reversal of 809893013 is 310398908.

809893013 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., 757735729 + 52157284 = 27527^2 + 7222^2 .

It is a cyclic number.

It is not a de Polignac number, because 809893013 - 2⁸ = 809892757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (709893013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404946506 + 404946507.

It is an arithmetic number, because the mean of its divisors is an integer number (404946507).

Almost surely, 2^809893013 is an apocalyptic number.

It is an amenable number.

809893013 is a deficient number, since it is larger than the sum of its proper divisors (1).

809893013 is an equidigital number, since it uses as much as digits as its factorization.

809893013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 809893013 is about 28458.6193094465. The cubic root of 809893013 is about 932.1287088082.

The spelling of 809893013 in words is "eight hundred nine million, eight hundred ninety-three thousand, thirteen".