12886739 has 4 divisors (see below), whose sum is σ = 13447056. Its totient is φ = 12326424.

The previous prime is 12886733. The next prime is 12886771. The reversal of 12886739 is 93768821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93768821 = 17 ⋅5515813.

It is a cyclic number.

It is not a de Polignac number, because 12886739 - 2⁴ = 12886723 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12886739.

It is not an unprimeable number, because it can be changed into a prime (12886733) 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 3 ways as a sum of consecutive naturals, for example, 280124 + ... + 280169.

It is an arithmetic number, because the mean of its divisors is an integer number (3361764).

Almost surely, 2^12886739 is an apocalyptic number.

12886739 is a deficient number, since it is larger than the sum of its proper divisors (560317).

12886739 is an equidigital number, since it uses as much as digits as its factorization.

12886739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560316.

The product of its digits is 145152, while the sum is 44.

The square root of 12886739 is about 3589.8104406779. The cubic root of 12886739 is about 234.4486182723.

The spelling of 12886739 in words is "twelve million, eight hundred eighty-six thousand, seven hundred thirty-nine".