12938929 has 4 divisors (see below), whose sum is σ = 12961060. Its totient is φ = 12916800.

The previous prime is 12938923. The next prime is 12938941. The reversal of 12938929 is 92983921.

12938929 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92983921 = 5591 ⋅16631.

It can be written as a sum of positive squares in 2 ways, for example, as 6512704 + 6426225 = 2552^2 + 2535^2 .

It is a cyclic number.

It is not a de Polignac number, because 12938929 - 2⁵ = 12938897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12938923) 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 3 ways as a sum of consecutive naturals, for example, 10164 + ... + 11365.

It is an arithmetic number, because the mean of its divisors is an integer number (3240265).

Almost surely, 2^12938929 is an apocalyptic number.

It is an amenable number.

12938929 is a deficient number, since it is larger than the sum of its proper divisors (22131).

12938929 is an equidigital number, since it uses as much as digits as its factorization.

12938929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22130.

The product of its digits is 69984, while the sum is 43.

The square root of 12938929 is about 3597.0722817314. The cubic root of 12938929 is about 234.7646897633.

The spelling of 12938929 in words is "twelve million, nine hundred thirty-eight thousand, nine hundred twenty-nine".