12739436 has 6 divisors (see below), whose sum is σ = 22294020. Its totient is φ = 6369716.

The previous prime is 12739429. The next prime is 12739471. The reversal of 12739436 is 63493721.

It is a junction number, because it is equal to n+sod(n) for n = 12739396 and 12739405.

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 as a sum of consecutive naturals, namely, 1592426 + ... + 1592433.

It is an arithmetic number, because the mean of its divisors is an integer number (3715670).

Almost surely, 2^12739436 is an apocalyptic number.

It is an amenable number.

12739436 is a deficient number, since it is larger than the sum of its proper divisors (9554584).

12739436 is a wasteful number, since it uses less digits than its factorization.

12739436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3184863 (or 3184861 counting only the distinct ones).

The product of its digits is 27216, while the sum is 35.

The square root of 12739436 is about 3569.2346518547. The cubic root of 12739436 is about 233.5518977002.

The spelling of 12739436 in words is "twelve million, seven hundred thirty-nine thousand, four hundred thirty-six".