864382321 has 4 divisors (see below), whose sum is σ = 942962544. Its totient is φ = 785802100.

The previous prime is 864382303. The next prime is 864382327. The reversal of 864382321 is 123283468.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 864382321 - 2⁹ = 864381809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (864382327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39290095 + ... + 39290116.

It is an arithmetic number, because the mean of its divisors is an integer number (235740636).

Almost surely, 2^864382321 is an apocalyptic number.

It is an amenable number.

864382321 is a deficient number, since it is larger than the sum of its proper divisors (78580223).

864382321 is a wasteful number, since it uses less digits than its factorization.

864382321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78580222.

The product of its digits is 55296, while the sum is 37.

The square root of 864382321 is about 29400.3796063928. The cubic root of 864382321 is about 952.5810958249.

The spelling of 864382321 in words is "eight hundred sixty-four million, three hundred eighty-two thousand, three hundred twenty-one".