12189685 has 8 divisors (see below), whose sum is σ = 14939136. Its totient is φ = 9544080.

The previous prime is 12189677. The next prime is 12189703. The reversal of 12189685 is 58698121.

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

It is not a de Polignac number, because 12189685 - 2³ = 12189677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25701 + ... + 26170.

It is an arithmetic number, because the mean of its divisors is an integer number (1867392).

Almost surely, 2^12189685 is an apocalyptic number.

It is an amenable number.

12189685 is a deficient number, since it is larger than the sum of its proper divisors (2749451).

12189685 is an equidigital number, since it uses as much as digits as its factorization.

12189685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51923.

The product of its digits is 34560, while the sum is 40.

The square root of 12189685 is about 3491.3729391172. The cubic root of 12189685 is about 230.1428539136.

The spelling of 12189685 in words is "twelve million, one hundred eighty-nine thousand, six hundred eighty-five".