12066239 has 4 divisors (see below), whose sum is σ = 12119160. Its totient is φ = 12013320.

The previous prime is 12066221. The next prime is 12066247. The reversal of 12066239 is 93266021.

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-12066239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12066269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26117 + ... + 26574.

It is an arithmetic number, because the mean of its divisors is an integer number (3029790).

Almost surely, 2^12066239 is an apocalyptic number.

12066239 is a deficient number, since it is larger than the sum of its proper divisors (52921).

12066239 is an equidigital number, since it uses as much as digits as its factorization.

12066239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52920.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 12066239 is about 3473.6492338749. The cubic root of 12066239 is about 229.3633242751.

The spelling of 12066239 in words is "twelve million, sixty-six thousand, two hundred thirty-nine".