868440844 has 24 divisors (see below), whose sum is σ = 1610532000. Its totient is φ = 409019520.

The previous prime is 868440787. The next prime is 868440871. The reversal of 868440844 is 448044868.

868440844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 868440794 and 868440803.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86544 + ... + 96055.

It is an arithmetic number, because the mean of its divisors is an integer number (67105500).

Almost surely, 2^868440844 is an apocalyptic number.

It is an amenable number.

868440844 is a deficient number, since it is larger than the sum of its proper divisors (742091156).

868440844 is a wasteful number, since it uses less digits than its factorization.

868440844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182673 (or 182671 counting only the distinct ones).

The product of its (nonzero) digits is 786432, while the sum is 46.

The square root of 868440844 is about 29469.3203857843. The cubic root of 868440844 is about 954.0696490397.

The spelling of 868440844 in words is "eight hundred sixty-eight million, four hundred forty thousand, eight hundred forty-four".