864531359 has 4 divisors (see below), whose sum is σ = 864709704. Its totient is φ = 864353016.

The previous prime is 864531329. The next prime is 864531361. The reversal of 864531359 is 953135468.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 864531359 - 2¹² = 864527263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864531329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81692 + ... + 91665.

It is an arithmetic number, because the mean of its divisors is an integer number (216177426).

Almost surely, 2^864531359 is an apocalyptic number.

864531359 is a deficient number, since it is larger than the sum of its proper divisors (178345).

864531359 is a wasteful number, since it uses less digits than its factorization.

864531359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178344.

The product of its digits is 388800, while the sum is 44.

The square root of 864531359 is about 29402.9141242837. The cubic root of 864531359 is about 952.6358411304.

It can be divided in two parts, 8645 and 31359, that added together give a palindrome (40004).

The spelling of 864531359 in words is "eight hundred sixty-four million, five hundred thirty-one thousand, three hundred fifty-nine".