12404443 has 4 divisors (see below), whose sum is σ = 12432888. Its totient is φ = 12376000.

The previous prime is 12404437. The next prime is 12404449. The reversal of 12404443 is 34440421.

12404443 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 is an interprime number because it is at equal distance from previous prime (12404437) and next prime (12404449).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12404443 is a prime.

It is a super-2 number, since 2×12404443² = 307740412280498, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12404449) 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, 13558 + ... + 14443.

It is an arithmetic number, because the mean of its divisors is an integer number (3108222).

Almost surely, 2^12404443 is an apocalyptic number.

12404443 is a deficient number, since it is larger than the sum of its proper divisors (28445).

12404443 is an equidigital number, since it uses as much as digits as its factorization.

12404443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28444.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 12404443 is about 3521.9941794387. The cubic root of 12404443 is about 231.4865465579.

Adding to 12404443 its reverse (34440421), we get a palindrome (46844864).

The spelling of 12404443 in words is "twelve million, four hundred four thousand, four hundred forty-three".