115543889 has 16 divisors (see below), whose sum is σ = 120590400. Its totient is φ = 110647296.

The previous prime is 115543867. The next prime is 115543903. The reversal of 115543889 is 988345511.

It is a cyclic number.

It is not a de Polignac number, because 115543889 - 2⁸ = 115543633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115543829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 598577 + ... + 598769.

It is an arithmetic number, because the mean of its divisors is an integer number (7536900).

Almost surely, 2^115543889 is an apocalyptic number.

It is an amenable number.

115543889 is a deficient number, since it is larger than the sum of its proper divisors (5046511).

115543889 is a wasteful number, since it uses less digits than its factorization.

115543889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464.

The product of its digits is 172800, while the sum is 44.

The square root of 115543889 is about 10749.1343372385. The cubic root of 115543889 is about 487.0598458865.

The spelling of 115543889 in words is "one hundred fifteen million, five hundred forty-three thousand, eight hundred eighty-nine".