12189843 has 12 divisors (see below), whose sum is σ = 17640168. Its totient is φ = 8111520.

The previous prime is 12189817. The next prime is 12189847. The reversal of 12189843 is 34898121.

It is not a de Polignac number, because 12189843 - 2¹⁴ = 12173459 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 5.

It is a junction number, because it is equal to n+sod(n) for n = 12189798 and 12189807.

It is not an unprimeable number, because it can be changed into a prime (12189847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6223 + ... + 7943.

It is an arithmetic number, because the mean of its divisors is an integer number (1470014).

Almost surely, 2^12189843 is an apocalyptic number.

12189843 is a deficient number, since it is larger than the sum of its proper divisors (5450325).

12189843 is a wasteful number, since it uses less digits than its factorization.

12189843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514 (or 2511 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 12189843 is about 3491.3955662457. The cubic root of 12189843 is about 230.1438482629.

The spelling of 12189843 in words is "twelve million, one hundred eighty-nine thousand, eight hundred forty-three".