864447047 has 8 divisors (see below), whose sum is σ = 910244400. Its totient is φ = 818679744.

The previous prime is 864447041. The next prime is 864447061. The reversal of 864447047 is 740744468.

It is a happy number.

864447047 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 a cyclic number.

It is not a de Polignac number, because 864447047 - 2²⁴ = 847669831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 864446989 and 864447007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864447041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74729 + ... + 85517.

It is an arithmetic number, because the mean of its divisors is an integer number (113780550).

Almost surely, 2^864447047 is an apocalyptic number.

864447047 is a deficient number, since it is larger than the sum of its proper divisors (45797353).

864447047 is a wasteful number, since it uses less digits than its factorization.

864447047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15025.

The product of its (nonzero) digits is 602112, while the sum is 44.

The square root of 864447047 is about 29401.4803538869. The cubic root of 864447047 is about 952.6048720420.

The spelling of 864447047 in words is "eight hundred sixty-four million, four hundred forty-seven thousand, forty-seven".