864809108 has 48 divisors (see below), whose sum is σ = 1726147584. Its totient is φ = 376696320.

The previous prime is 864809089. The next prime is 864809123. The reversal of 864809108 is 801908468.

It is a happy number.

864809108 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39566 + ... + 57402.

It is an arithmetic number, because the mean of its divisors is an integer number (35961408).

Almost surely, 2^864809108 is an apocalyptic number.

It is an amenable number.

864809108 is a deficient number, since it is larger than the sum of its proper divisors (861338476).

864809108 is a wasteful number, since it uses less digits than its factorization.

864809108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17912 (or 17910 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 864809108 is about 29407.6368992818. The cubic root of 864809108 is about 952.7378483505.

The spelling of 864809108 in words is "eight hundred sixty-four million, eight hundred nine thousand, one hundred eight".