811928479 has 2 divisors, whose sum is σ = 811928480. Its totient is φ = 811928478.

The previous prime is 811928477. The next prime is 811928489. The reversal of 811928479 is 974829118.

811928479 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 is a cyclic number.

It is not a de Polignac number, because 811928479 - 2¹ = 811928477 is a prime.

It is a super-2 number, since 2×811928479² = 1318455710022506882, which contains 22 as substring.

Together with 811928477, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (811928473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405964239 + 405964240.

It is an arithmetic number, because the mean of its divisors is an integer number (405964240).

Almost surely, 2^811928479 is an apocalyptic number.

811928479 is a deficient number, since it is larger than the sum of its proper divisors (1).

811928479 is an equidigital number, since it uses as much as digits as its factorization.

811928479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 49.

The square root of 811928479 is about 28494.3587223857. The cubic root of 811928479 is about 932.9089472681.

The spelling of 811928479 in words is "eight hundred eleven million, nine hundred twenty-eight thousand, four hundred seventy-nine".