12925439 has 4 divisors (see below), whose sum is σ = 13118424. Its totient is φ = 12732456.

The previous prime is 12925421. The next prime is 12925441. The reversal of 12925439 is 93452921.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12925439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12925399 and 12925408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12925139) 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, 96392 + ... + 96525.

It is an arithmetic number, because the mean of its divisors is an integer number (3279606).

Almost surely, 2^12925439 is an apocalyptic number.

12925439 is a deficient number, since it is larger than the sum of its proper divisors (192985).

12925439 is an equidigital number, since it uses as much as digits as its factorization.

12925439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192984.

The product of its digits is 19440, while the sum is 35.

The square root of 12925439 is about 3595.1966566518. The cubic root of 12925439 is about 234.6830736079.

The spelling of 12925439 in words is "twelve million, nine hundred twenty-five thousand, four hundred thirty-nine".