12139339 has 4 divisors (see below), whose sum is σ = 12146824. Its totient is φ = 12131856.

The previous prime is 12139327. The next prime is 12139349. The reversal of 12139339 is 93393121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12139339 - 2⁵ = 12139307 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 12139339.

It is not an unprimeable number, because it can be changed into a prime (12139319) 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, 177 + ... + 4930.

It is an arithmetic number, because the mean of its divisors is an integer number (3036706).

Almost surely, 2^12139339 is an apocalyptic number.

12139339 is a deficient number, since it is larger than the sum of its proper divisors (7485).

12139339 is an equidigital number, since it uses as much as digits as its factorization.

12139339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7484.

The product of its digits is 4374, while the sum is 31.

The square root of 12139339 is about 3484.1554213324. The cubic root of 12139339 is about 229.8255703312.

The spelling of 12139339 in words is "twelve million, one hundred thirty-nine thousand, three hundred thirty-nine".