868891312 has 40 divisors (see below), whose sum is σ = 1746713600. Its totient is φ = 418271040.

The previous prime is 868891307. The next prime is 868891321. The reversal of 868891312 is 213198868.

868891312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×868891312² = 1509944224138162688, which contains 22 as substring.

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, 94303 + ... + 103105.

It is an arithmetic number, because the mean of its divisors is an integer number (43667840).

Almost surely, 2^868891312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 868891312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (873356800).

868891312 is an abundant number, since it is smaller than the sum of its proper divisors (877822288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

868891312 is a wasteful number, since it uses less digits than its factorization.

868891312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9041 (or 9035 counting only the distinct ones).

The product of its digits is 165888, while the sum is 46.

The square root of 868891312 is about 29476.9623943852. The cubic root of 868891312 is about 954.2345820001.

It can be divided in two parts, 8688 and 91312, that added together give a 5-th power (100000 = 10⁵).

The spelling of 868891312 in words is "eight hundred sixty-eight million, eight hundred ninety-one thousand, three hundred twelve".