12166839 has 24 divisors (see below), whose sum is σ = 18701280. Its totient is φ = 7605312.

The previous prime is 12166813. The next prime is 12166841. The reversal of 12166839 is 93866121.

It is not a de Polignac number, because 12166839 - 2¹² = 12162743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12166879) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10417 + ... + 11525.

It is an arithmetic number, because the mean of its divisors is an integer number (779220).

Almost surely, 2^12166839 is an apocalyptic number.

12166839 is a deficient number, since it is larger than the sum of its proper divisors (6534441).

12166839 is a wasteful number, since it uses less digits than its factorization.

12166839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191 (or 1188 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 12166839 is about 3488.0996258708. The cubic root of 12166839 is about 229.9989855028.

The spelling of 12166839 in words is "twelve million, one hundred sixty-six thousand, eight hundred thirty-nine".