12993239 has 8 divisors (see below), whose sum is σ = 14905248. Its totient is φ = 11095200.

The previous prime is 12993221. The next prime is 12993251. The reversal of 12993239 is 93239921.

12993239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12993239 - 2⁸ = 12992983 is a prime.

It is a super-2 number, since 2×12993239² = 337648519422242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12993259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1412 + ... + 5289.

It is an arithmetic number, because the mean of its divisors is an integer number (1863156).

Almost surely, 2^12993239 is an apocalyptic number.

12993239 is a deficient number, since it is larger than the sum of its proper divisors (1912009).

12993239 is an equidigital number, since it uses as much as digits as its factorization.

12993239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6985.

The product of its digits is 26244, while the sum is 38.

The square root of 12993239 is about 3604.6135715219. The cubic root of 12993239 is about 235.0926992065.

The spelling of 12993239 in words is "twelve million, nine hundred ninety-three thousand, two hundred thirty-nine".