It is a happy number.
11915 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a Duffinian number.
It is a plaindrome in base 13.
It is an unprimeable number.
211915 is an apocalyptic number.
11915 is an equidigital number, since it uses as much as digits as its factorization.
11915 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2388.
The square root of 11915 is about 109.1558518816. The cubic root of 11915 is about 22.8401007640.
The spelling of 11915 in words is "eleven thousand, nine hundred fifteen".