864607399 has 4 divisors (see below), whose sum is σ = 876785040. Its totient is φ = 852429760.

The previous prime is 864607397. The next prime is 864607423. The reversal of 864607399 is 993706468.

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 864607399 - 2¹ = 864607397 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 (864607397) 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, 6088714 + ... + 6088855.

It is an arithmetic number, because the mean of its divisors is an integer number (219196260).

Almost surely, 2^864607399 is an apocalyptic number.

864607399 is a deficient number, since it is larger than the sum of its proper divisors (12177641).

864607399 is a wasteful number, since it uses less digits than its factorization.

864607399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12177640.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The square root of 864607399 is about 29404.2071649620. The cubic root of 864607399 is about 952.6637700597.

The spelling of 864607399 in words is "eight hundred sixty-four million, six hundred seven thousand, three hundred ninety-nine".