12189443 has 8 divisors (see below), whose sum is σ = 13973088. Its totient is φ = 10416384.

The previous prime is 12189439. The next prime is 12189449. The reversal of 12189443 is 34498121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12189443 - 2² = 12189439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12189449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5 + ... + 4937.

It is an arithmetic number, because the mean of its divisors is an integer number (1746636).

Almost surely, 2^12189443 is an apocalyptic number.

12189443 is a deficient number, since it is larger than the sum of its proper divisors (1783645).

12189443 is an equidigital number, since it uses as much as digits as its factorization.

12189443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5293.

The product of its digits is 6912, while the sum is 32.

The square root of 12189443 is about 3491.3382820918. The cubic root of 12189443 is about 230.1413309063.

The spelling of 12189443 in words is "twelve million, one hundred eighty-nine thousand, four hundred forty-three".