864446 has 8 divisors (see below), whose sum is σ = 1414584. Its totient is φ = 392920.

The previous prime is 864439. The next prime is 864449. The reversal of 864446 is 644468.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 864446.

It is not an unprimeable number, because it can be changed into a prime (864449) by changing a digit.

864446 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19625 + ... + 19668.

It is an arithmetic number, because the mean of its divisors is an integer number (176823).

2⁸⁶⁴⁴⁴⁶ is an apocalyptic number.

864446 is a deficient number, since it is larger than the sum of its proper divisors (550138).

864446 is a wasteful number, since it uses less digits than its factorization.

864446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39306.

The product of its digits is 18432, while the sum is 32.

The square root of 864446 is about 929.7558819389. The cubic root of 864446 is about 95.2604487450.

The spelling of 864446 in words is "eight hundred sixty-four thousand, four hundred forty-six".