12166843 has 8 divisors (see below), whose sum is σ = 13382208. Its totient is φ = 10991424.

The previous prime is 12166841. The next prime is 12166853. The reversal of 12166843 is 34866121.

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 12166843 - 2¹ = 12166841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12166841) 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, 9346 + ... + 10567.

It is an arithmetic number, because the mean of its divisors is an integer number (1672776).

Almost surely, 2^12166843 is an apocalyptic number.

12166843 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12166843 is a deficient number, since it is larger than the sum of its proper divisors (1215365).

12166843 is a wasteful number, since it uses less digits than its factorization.

12166843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19973.

The product of its digits is 6912, while the sum is 31.

The square root of 12166843 is about 3488.1001992489. The cubic root of 12166843 is about 229.9990107078. Note that the first 3 decimals are identical.

The spelling of 12166843 in words is "twelve million, one hundred sixty-six thousand, eight hundred forty-three".