813936089 has 2 divisors, whose sum is σ = 813936090. Its totient is φ = 813936088.

The previous prime is 813936037. The next prime is 813936107. The reversal of 813936089 is 980639318.

813936089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 479960464 + 333975625 = 21908^2 + 18275^2 .

It is a cyclic number.

It is not a de Polignac number, because 813936089 - 2⁸ = 813935833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (813936689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406968044 + 406968045.

It is an arithmetic number, because the mean of its divisors is an integer number (406968045).

Almost surely, 2^813936089 is an apocalyptic number.

It is an amenable number.

813936089 is a deficient number, since it is larger than the sum of its proper divisors (1).

813936089 is an equidigital number, since it uses as much as digits as its factorization.

813936089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 813936089 is about 28529.5651736931. The cubic root of 813936089 is about 933.6772315900.

The spelling of 813936089 in words is "eight hundred thirteen million, nine hundred thirty-six thousand, eighty-nine".