12586947 has 4 divisors (see below), whose sum is σ = 16782600. Its totient is φ = 8391296.

The previous prime is 12586913. The next prime is 12586963. The reversal of 12586947 is 74968521.

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 12586947 - 2¹¹ = 12584899 is a prime.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 12586899 and 12586908.

It is not an unprimeable number, because it can be changed into a prime (12586967) 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, 2097822 + ... + 2097827.

It is an arithmetic number, because the mean of its divisors is an integer number (4195650).

Almost surely, 2^12586947 is an apocalyptic number.

12586947 is a deficient number, since it is larger than the sum of its proper divisors (4195653).

12586947 is an equidigital number, since it uses as much as digits as its factorization.

12586947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4195652.

The product of its digits is 120960, while the sum is 42.

The square root of 12586947 is about 3547.8087603477. The cubic root of 12586947 is about 232.6162951558.

The spelling of 12586947 in words is "twelve million, five hundred eighty-six thousand, nine hundred forty-seven".