12739679 has 4 divisors (see below), whose sum is σ = 13010784. Its totient is φ = 12468576.

The previous prime is 12739673. The next prime is 12739687. The reversal of 12739679 is 97693721.

It is a happy number.

12739679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12739679 - 2¹⁶ = 12674143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12739673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135482 + ... + 135575.

It is an arithmetic number, because the mean of its divisors is an integer number (3252696).

Almost surely, 2^12739679 is an apocalyptic number.

12739679 is a deficient number, since it is larger than the sum of its proper divisors (271105).

12739679 is an equidigital number, since it uses as much as digits as its factorization.

12739679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271104.

The product of its digits is 142884, while the sum is 44.

The square root of 12739679 is about 3569.2686926036. The cubic root of 12739679 is about 233.5533826626.

The spelling of 12739679 in words is "twelve million, seven hundred thirty-nine thousand, six hundred seventy-nine".