12709939 has 4 divisors (see below), whose sum is σ = 13865400. Its totient is φ = 11554480.

The previous prime is 12709933. The next prime is 12709943. The reversal of 12709939 is 93990721.

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

It is a cyclic number.

It is not a de Polignac number, because 12709939 - 2⁹ = 12709427 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (12709933) 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 3 ways as a sum of consecutive naturals, for example, 577714 + ... + 577735.

It is an arithmetic number, because the mean of its divisors is an integer number (3466350).

Almost surely, 2^12709939 is an apocalyptic number.

12709939 is a deficient number, since it is larger than the sum of its proper divisors (1155461).

12709939 is a wasteful number, since it uses less digits than its factorization.

12709939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155460.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 12709939 is about 3565.1001388460. The cubic root of 12709939 is about 233.3715023727.

The spelling of 12709939 in words is "twelve million, seven hundred nine thousand, nine hundred thirty-nine".