868439100 has 72 divisors (see below), whose sum is σ = 2544559360. Its totient is φ = 228646080.

The previous prime is 868439087. The next prime is 868439119. The reversal of 868439100 is 1934868.

868439100 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 23 ways as a sum of consecutive naturals, for example, 5379 + ... + 42021.

Almost surely, 2^868439100 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 868439100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1272279680).

868439100 is an abundant number, since it is smaller than the sum of its proper divisors (1676120260).

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

868439100 is a wasteful number, since it uses less digits than its factorization.

868439100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36739 (or 36732 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 868439100 is about 29469.2907956741. The cubic root of 868439100 is about 954.0690103861.

The spelling of 868439100 in words is "eight hundred sixty-eight million, four hundred thirty-nine thousand, one hundred".