12886947 has 12 divisors (see below), whose sum is σ = 18700864. Its totient is φ = 8551440.

The previous prime is 12886931. The next prime is 12886949. The reversal of 12886947 is 74968821.

It is not a de Polignac number, because 12886947 - 2⁴ = 12886931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12886949) 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 11 ways as a sum of consecutive naturals, for example, 1204 + ... + 5217.

Almost surely, 2^12886947 is an apocalyptic number.

12886947 is a deficient number, since it is larger than the sum of its proper divisors (5813917).

12886947 is a wasteful number, since it uses less digits than its factorization.

12886947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6650 (or 6647 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 12886947 is about 3589.8394114500. The cubic root of 12886947 is about 234.4498796477.

The spelling of 12886947 in words is "twelve million, eight hundred eighty-six thousand, nine hundred forty-seven".