864934589 has 4 divisors (see below), whose sum is σ = 871157280. Its totient is φ = 858711900.

The previous prime is 864934571. The next prime is 864934591. The reversal of 864934589 is 985439468.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-864934589 is a prime.

It is a super-2 number, since 2×864934589² = 1496223686497197842, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864934489) 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, 3111137 + ... + 3111414.

It is an arithmetic number, because the mean of its divisors is an integer number (217789320).

Almost surely, 2^864934589 is an apocalyptic number.

It is an amenable number.

864934589 is a deficient number, since it is larger than the sum of its proper divisors (6222691).

864934589 is a wasteful number, since it uses less digits than its factorization.

864934589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6222690.

The product of its digits is 7464960, while the sum is 56.

The square root of 864934589 is about 29409.7702983209. The cubic root of 864934589 is about 952.7839258471.

The spelling of 864934589 in words is "eight hundred sixty-four million, nine hundred thirty-four thousand, five hundred eighty-nine".