12934139 has 4 divisors (see below), whose sum is σ = 13090056. Its totient is φ = 12778224.

The previous prime is 12934123. The next prime is 12934153. The reversal of 12934139 is 93143921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93143921 = 13 ⋅7164917.

It is a cyclic number.

It is not a de Polignac number, because 12934139 - 2⁴ = 12934123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12934109) 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, 77834 + ... + 77999.

It is an arithmetic number, because the mean of its divisors is an integer number (3272514).

Almost surely, 2^12934139 is an apocalyptic number.

12934139 is a deficient number, since it is larger than the sum of its proper divisors (155917).

12934139 is an equidigital number, since it uses as much as digits as its factorization.

12934139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155916.

The product of its digits is 5832, while the sum is 32.

The square root of 12934139 is about 3596.4064008396. The cubic root of 12934139 is about 234.7357161737.

The spelling of 12934139 in words is "twelve million, nine hundred thirty-four thousand, one hundred thirty-nine".