12166739 has 4 divisors (see below), whose sum is σ = 13102656. Its totient is φ = 11230824.

The previous prime is 12166729. The next prime is 12166757. The reversal of 12166739 is 93766121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12166739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12166699 and 12166708.

It is not an unprimeable number, because it can be changed into a prime (12166729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 467939 + ... + 467964.

It is an arithmetic number, because the mean of its divisors is an integer number (3275664).

Almost surely, 2^12166739 is an apocalyptic number.

12166739 is a deficient number, since it is larger than the sum of its proper divisors (935917).

12166739 is an equidigital number, since it uses as much as digits as its factorization.

12166739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935916.

The product of its digits is 13608, while the sum is 35.

The square root of 12166739 is about 3488.0852913884. The cubic root of 12166739 is about 229.9983553758.

The spelling of 12166739 in words is "twelve million, one hundred sixty-six thousand, seven hundred thirty-nine".