12047389 has 4 divisors (see below), whose sum is σ = 12094524. Its totient is φ = 12000256.

The previous prime is 12047363. The next prime is 12047393. The reversal of 12047389 is 98374021.

12047389 is digitally balanced in base 3, 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 6335289 + 5712100 = 2517^2 + 2390^2 .

It is a cyclic number.

It is not a de Polignac number, because 12047389 - 2⁹ = 12046877 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 (12047309) 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, 23182 + ... + 23695.

It is an arithmetic number, because the mean of its divisors is an integer number (3023631).

Almost surely, 2^12047389 is an apocalyptic number.

It is an amenable number.

12047389 is a deficient number, since it is larger than the sum of its proper divisors (47135).

12047389 is an equidigital number, since it uses as much as digits as its factorization.

12047389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47134.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 12047389 is about 3470.9348884703. The cubic root of 12047389 is about 229.2438241275.

The spelling of 12047389 in words is "twelve million, forty-seven thousand, three hundred eighty-nine".