12438973 has 4 divisors (see below), whose sum is σ = 12703680. Its totient is φ = 12174268.

The previous prime is 12438947. The next prime is 12438983. The reversal of 12438973 is 37983421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12438973 - 2¹⁷ = 12307901 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 (12438983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132283 + ... + 132376.

It is an arithmetic number, because the mean of its divisors is an integer number (3175920).

Almost surely, 2^12438973 is an apocalyptic number.

It is an amenable number.

12438973 is a deficient number, since it is larger than the sum of its proper divisors (264707).

12438973 is an equidigital number, since it uses as much as digits as its factorization.

12438973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264706.

The product of its digits is 36288, while the sum is 37.

The square root of 12438973 is about 3526.8928251366. The cubic root of 12438973 is about 231.7011423828.

The spelling of 12438973 in words is "twelve million, four hundred thirty-eight thousand, nine hundred seventy-three".