12115289 has 4 divisors (see below), whose sum is σ = 12228624. Its totient is φ = 12001956.

The previous prime is 12115283. The next prime is 12115297. The reversal of 12115289 is 98251121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12115289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12115283) 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, 56507 + ... + 56720.

It is an arithmetic number, because the mean of its divisors is an integer number (3057156).

Almost surely, 2^12115289 is an apocalyptic number.

It is an amenable number.

12115289 is a deficient number, since it is larger than the sum of its proper divisors (113335).

12115289 is a wasteful number, since it uses less digits than its factorization.

12115289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113334.

The product of its digits is 1440, while the sum is 29.

The square root of 12115289 is about 3480.7023716486. The cubic root of 12115289 is about 229.6736960776.

The spelling of 12115289 in words is "twelve million, one hundred fifteen thousand, two hundred eighty-nine".