861115344 has 20 divisors (see below), whose sum is σ = 2224548096. Its totient is φ = 287038432.

The previous prime is 861115273. The next prime is 861115379. The reversal of 861115344 is 443511168.

861115344 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 3 ways as a sum of consecutive naturals, for example, 8969904 + ... + 8969999.

Almost surely, 2^861115344 is an apocalyptic number.

It is an amenable number.

861115344 is an abundant number, since it is smaller than the sum of its proper divisors (1363432752).

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

861115344 is a wasteful number, since it uses less digits than its factorization.

861115344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17939914 (or 17939908 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 861115344 is about 29344.7668929232. The cubic root of 861115344 is about 951.3794710968.

The spelling of 861115344 in words is "eight hundred sixty-one million, one hundred fifteen thousand, three hundred forty-four".