12939867 has 12 divisors (see below), whose sum is σ = 18728424. Its totient is φ = 8609280.

The previous prime is 12939859. The next prime is 12939889. The reversal of 12939867 is 76893921.

It is not a de Polignac number, because 12939867 - 2³ = 12939859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12939827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4648 + ... + 6890.

It is an arithmetic number, because the mean of its divisors is an integer number (1560702).

Almost surely, 2^12939867 is an apocalyptic number.

12939867 is a deficient number, since it is larger than the sum of its proper divisors (5788557).

12939867 is a wasteful number, since it uses less digits than its factorization.

12939867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2890 (or 2887 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 12939867 is about 3597.2026631815. The cubic root of 12939867 is about 234.7703626687.

The spelling of 12939867 in words is "twelve million, nine hundred thirty-nine thousand, eight hundred sixty-seven".