115899187 has 8 divisors (see below), whose sum is σ = 118525680. Its totient is φ = 113294880.

The previous prime is 115899151. The next prime is 115899191. The reversal of 115899187 is 781998511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115899187 - 2¹⁹ = 115374899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115899187.

It is not an unprimeable number, because it can be changed into a prime (115899137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5253 + ... + 16105.

It is an arithmetic number, because the mean of its divisors is an integer number (14815710).

Almost surely, 2^115899187 is an apocalyptic number.

115899187 is a deficient number, since it is larger than the sum of its proper divisors (2626493).

115899187 is a wasteful number, since it uses less digits than its factorization.

115899187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11093.

The product of its digits is 181440, while the sum is 49.

The square root of 115899187 is about 10765.6484709468. The cubic root of 115899187 is about 487.5585721428.

The spelling of 115899187 in words is "one hundred fifteen million, eight hundred ninety-nine thousand, one hundred eighty-seven".