12443817 has 16 divisors (see below), whose sum is σ = 17195328. Its totient is φ = 7999680.

The previous prime is 12443791. The next prime is 12443819. The reversal of 12443817 is 71834421.

12443817 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 12443817 - 2¹¹ = 12441769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12443819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9058 + ... + 10340.

It is an arithmetic number, because the mean of its divisors is an integer number (1074708).

Almost surely, 2^12443817 is an apocalyptic number.

It is an amenable number.

12443817 is a deficient number, since it is larger than the sum of its proper divisors (4751511).

12443817 is a wasteful number, since it uses less digits than its factorization.

12443817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400.

The product of its digits is 5376, while the sum is 30.

The square root of 12443817 is about 3527.5794817410. The cubic root of 12443817 is about 231.7312149265.

The spelling of 12443817 in words is "twelve million, four hundred forty-three thousand, eight hundred seventeen".