115911199 has 4 divisors (see below), whose sum is σ = 115938760. Its totient is φ = 115883640.

The previous prime is 115911181. The next prime is 115911203. The reversal of 115911199 is 991119511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 115911199 - 2⁵ = 115911167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115911109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6012 + ... + 16369.

It is an arithmetic number, because the mean of its divisors is an integer number (28984690).

Almost surely, 2^115911199 is an apocalyptic number.

115911199 is a deficient number, since it is larger than the sum of its proper divisors (27561).

115911199 is an equidigital number, since it uses as much as digits as its factorization.

115911199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27560.

The product of its digits is 3645, while the sum is 37.

The square root of 115911199 is about 10766.2063420687. The cubic root of 115911199 is about 487.5754153764.

The spelling of 115911199 in words is "one hundred fifteen million, nine hundred eleven thousand, one hundred ninety-nine".