12066389 has 4 divisors (see below), whose sum is σ = 12231756. Its totient is φ = 11901024.

The previous prime is 12066377. The next prime is 12066419. The reversal of 12066389 is 98366021.

12066389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8614225 + 3452164 = 2935^2 + 1858^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12066389 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 (12066289) 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, 82574 + ... + 82719.

It is an arithmetic number, because the mean of its divisors is an integer number (3057939).

Almost surely, 2^12066389 is an apocalyptic number.

It is an amenable number.

12066389 is a deficient number, since it is larger than the sum of its proper divisors (165367).

12066389 is an equidigital number, since it uses as much as digits as its factorization.

12066389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165366.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 12066389 is about 3473.6708249343. The cubic root of 12066389 is about 229.3642747053.

The spelling of 12066389 in words is "twelve million, sixty-six thousand, three hundred eighty-nine".