12339389 has 4 divisors (see below), whose sum is σ = 12672924. Its totient is φ = 12005856.

The previous prime is 12339377. The next prime is 12339403. The reversal of 12339389 is 98393321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6980164 + 5359225 = 2642^2 + 2315^2 .

It is a cyclic number.

It is not a de Polignac number, because 12339389 - 2¹² = 12335293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12339329) 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, 166712 + ... + 166785.

It is an arithmetic number, because the mean of its divisors is an integer number (3168231).

Almost surely, 2^12339389 is an apocalyptic number.

It is an amenable number.

12339389 is a deficient number, since it is larger than the sum of its proper divisors (333535).

12339389 is an equidigital number, since it uses as much as digits as its factorization.

12339389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333534.

The product of its digits is 34992, while the sum is 38.

The square root of 12339389 is about 3512.7466461446. The cubic root of 12339389 is about 231.0811668568.

The spelling of 12339389 in words is "twelve million, three hundred thirty-nine thousand, three hundred eighty-nine".