12438904 has 8 divisors (see below), whose sum is σ = 23322960. Its totient is φ = 6219448.

The previous prime is 12438887. The next prime is 12438931. The reversal of 12438904 is 40983421.

12438904 is nontrivially palindromic in base 7.

It is a tau number, because it is divible by the number of its divisors (8).

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, 777424 + ... + 777439.

It is an arithmetic number, because the mean of its divisors is an integer number (2915370).

Almost surely, 2^12438904 is an apocalyptic number.

It is an amenable number.

12438904 is a deficient number, since it is larger than the sum of its proper divisors (10884056).

12438904 is a wasteful number, since it uses less digits than its factorization.

12438904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554869 (or 1554865 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 12438904 is about 3526.8830431416. The cubic root of 12438904 is about 231.7007139603.

The spelling of 12438904 in words is "twelve million, four hundred thirty-eight thousand, nine hundred four".