12043989 has 12 divisors (see below), whose sum is σ = 17487756. Its totient is φ = 7987392.

The previous prime is 12043979. The next prime is 12044029. The reversal of 12043989 is 98934021.

It can be written as a sum of positive squares in 2 ways, for example, as 7128900 + 4915089 = 2670^2 + 2217^2 .

It is not a de Polignac number, because 12043989 - 2⁹ = 12043477 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12043909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1624 + ... + 5169.

It is an arithmetic number, because the mean of its divisors is an integer number (1457313).

Almost surely, 2^12043989 is an apocalyptic number.

It is an amenable number.

12043989 is a deficient number, since it is larger than the sum of its proper divisors (5443767).

12043989 is a wasteful number, since it uses less digits than its factorization.

12043989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6996 (or 6993 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 12043989 is about 3470.4450723214. The cubic root of 12043989 is about 229.2222564574. Note that the first 4 decimals are identical.

The spelling of 12043989 in words is "twelve million, forty-three thousand, nine hundred eighty-nine".