811926923 has 2 divisors, whose sum is σ = 811926924. Its totient is φ = 811926922.

The previous prime is 811926889. The next prime is 811926937. The reversal of 811926923 is 329629118.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-811926923 is a prime.

It is not a weakly prime, because it can be changed into another prime (811926023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405963461 + 405963462.

It is an arithmetic number, because the mean of its divisors is an integer number (405963462).

Almost surely, 2^811926923 is an apocalyptic number.

811926923 is a deficient number, since it is larger than the sum of its proper divisors (1).

811926923 is an equidigital number, since it uses as much as digits as its factorization.

811926923 is an evil number, because the sum of its binary digits is even.

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

The square root of 811926923 is about 28494.3314187226. The cubic root of 811926923 is about 932.9083513177.

The spelling of 811926923 in words is "eight hundred eleven million, nine hundred twenty-six thousand, nine hundred twenty-three".