12189617 has 4 divisors (see below), whose sum is σ = 13297776. Its totient is φ = 11081460.

The previous prime is 12189607. The next prime is 12189623. The reversal of 12189617 is 71698121.

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 not a de Polignac number, because 12189617 - 2⁶ = 12189553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12189607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 554063 + ... + 554084.

It is an arithmetic number, because the mean of its divisors is an integer number (3324444).

Almost surely, 2^12189617 is an apocalyptic number.

It is an amenable number.

12189617 is a deficient number, since it is larger than the sum of its proper divisors (1108159).

12189617 is a wasteful number, since it uses less digits than its factorization.

12189617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108158.

The product of its digits is 6048, while the sum is 35.

The square root of 12189617 is about 3491.3632008143. The cubic root of 12189617 is about 230.1424259632.

The spelling of 12189617 in words is "twelve million, one hundred eighty-nine thousand, six hundred seventeen".