12439846 has 4 divisors (see below), whose sum is σ = 18659772. Its totient is φ = 6219922.

The previous prime is 12439841. The next prime is 12439871. The reversal of 12439846 is 64893421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64893421 = 373 ⋅173977.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12439841) 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 as a sum of consecutive naturals, namely, 3109960 + ... + 3109963.

It is an arithmetic number, because the mean of its divisors is an integer number (4664943).

Almost surely, 2^12439846 is an apocalyptic number.

12439846 is a deficient number, since it is larger than the sum of its proper divisors (6219926).

12439846 is an equidigital number, since it uses as much as digits as its factorization.

12439846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6219925.

The product of its digits is 41472, while the sum is 37.

The square root of 12439846 is about 3527.0165862950. The cubic root of 12439846 is about 231.7065627222.

The spelling of 12439846 in words is "twelve million, four hundred thirty-nine thousand, eight hundred forty-six".