864846447 has 8 divisors (see below), whose sum is σ = 1153417344. Its totient is φ = 576419928.

The previous prime is 864846431. The next prime is 864846449. The reversal of 864846447 is 744648468.

It is a happy number.

864846447 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 864846447 - 2⁴ = 864846431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 864846447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864846449) 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, 21243 + ... + 46700.

It is an arithmetic number, because the mean of its divisors is an integer number (144177168).

Almost surely, 2^864846447 is an apocalyptic number.

864846447 is a deficient number, since it is larger than the sum of its proper divisors (288570897).

864846447 is a wasteful number, since it uses less digits than its factorization.

864846447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72189.

The product of its digits is 4128768, while the sum is 51.

The square root of 864846447 is about 29408.2717445279. The cubic root of 864846447 is about 952.7515599570.

The spelling of 864846447 in words is "eight hundred sixty-four million, eight hundred forty-six thousand, four hundred forty-seven".