12438047 has 4 divisors (see below), whose sum is σ = 12741456. Its totient is φ = 12134640.

The previous prime is 12438043. The next prime is 12438053. The reversal of 12438047 is 74083421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74083421 = 47 ⋅1576243.

It is a cyclic number.

It is not a de Polignac number, because 12438047 - 2² = 12438043 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12438043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151643 + ... + 151724.

It is an arithmetic number, because the mean of its divisors is an integer number (3185364).

Almost surely, 2^12438047 is an apocalyptic number.

12438047 is a deficient number, since it is larger than the sum of its proper divisors (303409).

12438047 is an equidigital number, since it uses as much as digits as its factorization.

12438047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303408.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 12438047 is about 3526.7615456676. The cubic root of 12438047 is about 231.6953926964.

The spelling of 12438047 in words is "twelve million, four hundred thirty-eight thousand, forty-seven".