12993529 has 4 divisors (see below), whose sum is σ = 13059684. Its totient is φ = 12927376.

The previous prime is 12993509. The next prime is 12993571. The reversal of 12993529 is 92539921.

12993529 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: 92539921 = 419 ⋅220859.

It can be written as a sum of positive squares in 2 ways, for example, as 10575504 + 2418025 = 3252^2 + 1555^2 .

It is a cyclic number.

It is not a de Polignac number, because 12993529 - 2²³ = 4604921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12993491 and 12993500.

It is not an unprimeable number, because it can be changed into a prime (12993509) 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, 32782 + ... + 33175.

It is an arithmetic number, because the mean of its divisors is an integer number (3264921).

Almost surely, 2^12993529 is an apocalyptic number.

It is an amenable number.

12993529 is a deficient number, since it is larger than the sum of its proper divisors (66155).

12993529 is an equidigital number, since it uses as much as digits as its factorization.

12993529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66154.

The product of its digits is 43740, while the sum is 40.

The square root of 12993529 is about 3604.6537975234. The cubic root of 12993529 is about 235.0944482283.

The spelling of 12993529 in words is "twelve million, nine hundred ninety-three thousand, five hundred twenty-nine".