12166959 has 8 divisors (see below), whose sum is σ = 18540160. Its totient is φ = 6952536.

The previous prime is 12166949. The next prime is 12166961. The reversal of 12166959 is 95966121.

12166959 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12166959 - 2⁸ = 12166703 is a prime.

It is a super-3 number, since 3×12166959³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12166909) 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, 289669 + ... + 289710.

It is an arithmetic number, because the mean of its divisors is an integer number (2317520).

Almost surely, 2^12166959 is an apocalyptic number.

12166959 is a deficient number, since it is larger than the sum of its proper divisors (6373201).

12166959 is an equidigital number, since it uses as much as digits as its factorization.

12166959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579389.

The product of its digits is 29160, while the sum is 39.

The square root of 12166959 is about 3488.1168271719. The cubic root of 12166959 is about 229.9997416506. Note that the first 3 decimals are identical.

The spelling of 12166959 in words is "twelve million, one hundred sixty-six thousand, nine hundred fifty-nine".