12939543 has 12 divisors (see below), whose sum is σ = 18733000. Its totient is φ = 8606736.

The previous prime is 12939541. The next prime is 12939571. The reversal of 12939543 is 34593921.

It is a happy number.

12939543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12939543 - 2¹ = 12939541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12939498 and 12939507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12939541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3333 + ... + 6081.

Almost surely, 2^12939543 is an apocalyptic number.

12939543 is a deficient number, since it is larger than the sum of its proper divisors (5793457).

12939543 is a wasteful number, since it uses less digits than its factorization.

12939543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3278 (or 3275 counting only the distinct ones).

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

The square root of 12939543 is about 3597.1576279057. The cubic root of 12939543 is about 234.7684031886.

The spelling of 12939543 in words is "twelve million, nine hundred thirty-nine thousand, five hundred forty-three".