12443403 has 12 divisors (see below), whose sum is σ = 19300200. Its totient is φ = 7110432.

The previous prime is 12443399. The next prime is 12443411. The reversal of 12443403 is 30434421.

12443403 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12443403 - 2² = 12443399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 12443403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12443903) 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, 42178 + ... + 42471.

It is an arithmetic number, because the mean of its divisors is an integer number (1608350).

Almost surely, 2^12443403 is an apocalyptic number.

12443403 is a deficient number, since it is larger than the sum of its proper divisors (6856797).

12443403 is an equidigital number, since it uses as much as digits as its factorization.

12443403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84666 (or 84659 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 12443403 is about 3527.5208007891. The cubic root of 12443403 is about 231.7286450348.

Adding to 12443403 its reverse (30434421), we get a palindrome (42877824).

The spelling of 12443403 in words is "twelve million, four hundred forty-three thousand, four hundred three".