12935439 has 24 divisors (see below), whose sum is σ = 20518992. Its totient is φ = 7787520.

The previous prime is 12935437. The next prime is 12935441. The reversal of 12935439 is 93453921.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12935437) and next prime (12935441).

It is not a de Polignac number, because 12935439 - 2¹ = 12935437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12935431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18769 + ... + 19445.

It is an arithmetic number, because the mean of its divisors is an integer number (854958).

Almost surely, 2^12935439 is an apocalyptic number.

12935439 is a deficient number, since it is larger than the sum of its proper divisors (7583553).

12935439 is a wasteful number, since it uses less digits than its factorization.

12935439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887 (or 884 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 12935439 is about 3596.5871322686. The cubic root of 12935439 is about 234.7435802768.

The spelling of 12935439 in words is "twelve million, nine hundred thirty-five thousand, four hundred thirty-nine".