865964384 has 12 divisors (see below), whose sum is σ = 1704867444. Its totient is φ = 432982176.

The previous prime is 865964381. The next prime is 865964399. The reversal of 865964384 is 483469568.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865964381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13530662 + ... + 13530725.

It is an arithmetic number, because the mean of its divisors is an integer number (142072287).

Almost surely, 2^865964384 is an apocalyptic number.

It is an amenable number.

865964384 is a deficient number, since it is larger than the sum of its proper divisors (838903060).

865964384 is a wasteful number, since it uses less digits than its factorization.

865964384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27061397 (or 27061389 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 53.

The square root of 865964384 is about 29427.2727924285. The cubic root of 865964384 is about 953.1619054835.

The spelling of 865964384 in words is "eight hundred sixty-five million, nine hundred sixty-four thousand, three hundred eighty-four".