811149479 has 12 divisors (see below), whose sum is σ = 944201808. Its totient is φ = 694814400.

The previous prime is 811149473. The next prime is 811149491. The reversal of 811149479 is 974941118.

It is a happy number.

It is not a de Polignac number, because 811149479 - 2²⁸ = 542714023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811149473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85199 + ... + 94239.

It is an arithmetic number, because the mean of its divisors is an integer number (78683484).

Almost surely, 2^811149479 is an apocalyptic number.

811149479 is a deficient number, since it is larger than the sum of its proper divisors (133052329).

811149479 is a wasteful number, since it uses less digits than its factorization.

811149479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10886 (or 10879 counting only the distinct ones).

The product of its digits is 72576, while the sum is 44.

The square root of 811149479 is about 28480.6860696859. The cubic root of 811149479 is about 932.6104937985.

The spelling of 811149479 in words is "eight hundred eleven million, one hundred forty-nine thousand, four hundred seventy-nine".