12443854 has 4 divisors (see below), whose sum is σ = 18665784. Its totient is φ = 6221926.

The previous prime is 12443833. The next prime is 12443863. The reversal of 12443854 is 45834421.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3110962 + ... + 3110965.

It is an arithmetic number, because the mean of its divisors is an integer number (4666446).

Almost surely, 2^12443854 is an apocalyptic number.

12443854 is a deficient number, since it is larger than the sum of its proper divisors (6221930).

12443854 is an equidigital number, since it uses as much as digits as its factorization.

12443854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6221929.

The product of its digits is 15360, while the sum is 31.

The square root of 12443854 is about 3527.5847261264. The cubic root of 12443854 is about 231.7314446000.

The spelling of 12443854 in words is "twelve million, four hundred forty-three thousand, eight hundred fifty-four".