12399339 has 4 divisors (see below), whose sum is σ = 16532456. Its totient is φ = 8266224.

The previous prime is 12399313. The next prime is 12399347. The reversal of 12399339 is 93399321.

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

It is not a de Polignac number, because 12399339 - 2¹⁶ = 12333803 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12399297 and 12399306.

It is not an unprimeable number, because it can be changed into a prime (12399539) 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, 2066554 + ... + 2066559.

It is an arithmetic number, because the mean of its divisors is an integer number (4133114).

Almost surely, 2^12399339 is an apocalyptic number.

12399339 is a deficient number, since it is larger than the sum of its proper divisors (4133117).

12399339 is an equidigital number, since it uses as much as digits as its factorization.

12399339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4133116.

The product of its digits is 39366, while the sum is 39.

The square root of 12399339 is about 3521.2695153879. The cubic root of 12399339 is about 231.4547926285.

The spelling of 12399339 in words is "twelve million, three hundred ninety-nine thousand, three hundred thirty-nine".