12659947 has 8 divisors (see below), whose sum is σ = 13381200. Its totient is φ = 11944224.

The previous prime is 12659897. The next prime is 12659953. The reversal of 12659947 is 74995621.

It is a happy number.

12659947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12659947 - 2⁷ = 12659819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12654947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3873 + ... + 6349.

It is an arithmetic number, because the mean of its divisors is an integer number (1672650).

Almost surely, 2^12659947 is an apocalyptic number.

12659947 is a deficient number, since it is larger than the sum of its proper divisors (721253).

12659947 is a wasteful number, since it uses less digits than its factorization.

12659947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765.

The product of its digits is 136080, while the sum is 43.

The square root of 12659947 is about 3558.0819271062. The cubic root of 12659947 is about 233.0651269742.

The spelling of 12659947 in words is "twelve million, six hundred fifty-nine thousand, nine hundred forty-seven".