12404423443 has 4 divisors (see below), whose sum is σ = 12411734760. Its totient is φ = 12397112128.

The previous prime is 12404423401. The next prime is 12404423453. The reversal of 12404423443 is 34432440421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34432440421 = 23 ⋅1497062627.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12404423443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12404423453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3653113 + ... + 3656506.

It is an arithmetic number, because the mean of its divisors is an integer number (3102933690).

Almost surely, 2^12404423443 is an apocalyptic number.

12404423443 is a deficient number, since it is larger than the sum of its proper divisors (7311317).

12404423443 is an equidigital number, since it uses as much as digits as its factorization.

12404423443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7311316.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 12404423443 its reverse (34432440421), we get a palindrome (46836863864).

The spelling of 12404423443 in words is "twelve billion, four hundred four million, four hundred twenty-three thousand, four hundred forty-three".