815879463 has 32 divisors (see below), whose sum is σ = 1289688576. Its totient is φ = 449100288.

The previous prime is 815879447. The next prime is 815879473. The reversal of 815879463 is 364978518.

It is not a de Polignac number, because 815879463 - 2⁴ = 815879447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815879413) 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 31 ways as a sum of consecutive naturals, for example, 59731 + ... + 72107.

It is an arithmetic number, because the mean of its divisors is an integer number (40302768).

Almost surely, 2^815879463 is an apocalyptic number.

815879463 is a deficient number, since it is larger than the sum of its proper divisors (473809113).

815879463 is a wasteful number, since it uses less digits than its factorization.

815879463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12503.

The product of its digits is 1451520, while the sum is 51.

The square root of 815879463 is about 28563.6038167455. The cubic root of 815879463 is about 934.4197312739.

The spelling of 815879463 in words is "eight hundred fifteen million, eight hundred seventy-nine thousand, four hundred sixty-three".