864439055 has 8 divisors (see below), whose sum is σ = 1037530944. Its totient is φ = 691415200.

The previous prime is 864439049. The next prime is 864439073. The reversal of 864439055 is 550934468.

864439055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 864439055 - 2¹⁰ = 864438031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 864438997 and 864439015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17210 + ... + 45000.

It is an arithmetic number, because the mean of its divisors is an integer number (129691368).

Almost surely, 2^864439055 is an apocalyptic number.

864439055 is a deficient number, since it is larger than the sum of its proper divisors (173091889).

864439055 is a wasteful number, since it uses less digits than its factorization.

864439055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34017.

The product of its (nonzero) digits is 518400, while the sum is 44.

The square root of 864439055 is about 29401.3444420489. The cubic root of 864439055 is about 952.6019363536.

The spelling of 864439055 in words is "eight hundred sixty-four million, four hundred thirty-nine thousand, fifty-five".