12939436 has 24 divisors (see below), whose sum is σ = 23362416. Its totient is φ = 6266880.

The previous prime is 12939391. The next prime is 12939449. The reversal of 12939436 is 63493921.

It is a junction number, because it is equal to n+sod(n) for n = 12939395 and 12939404.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 41995 + ... + 42301.

It is an arithmetic number, because the mean of its divisors is an integer number (973434).

Almost surely, 2^12939436 is an apocalyptic number.

It is an amenable number.

12939436 is a deficient number, since it is larger than the sum of its proper divisors (10422980).

12939436 is a wasteful number, since it uses less digits than its factorization.

12939436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609 (or 607 counting only the distinct ones).

The product of its digits is 34992, while the sum is 37.

The square root of 12939436 is about 3597.1427550210. The cubic root of 12939436 is about 234.7677560692.

The spelling of 12939436 in words is "twelve million, nine hundred thirty-nine thousand, four hundred thirty-six".