12739339 has 4 divisors (see below), whose sum is σ = 12955320. Its totient is φ = 12523360.

The previous prime is 12739319. The next prime is 12739343. The reversal of 12739339 is 93393721.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12739339 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12739298 and 12739307.

It is not an unprimeable number, because it can be changed into a prime (12739319) 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, 107902 + ... + 108019.

It is an arithmetic number, because the mean of its divisors is an integer number (3238830).

Almost surely, 2^12739339 is an apocalyptic number.

12739339 is a deficient number, since it is larger than the sum of its proper divisors (215981).

12739339 is an equidigital number, since it uses as much as digits as its factorization.

12739339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215980.

The product of its digits is 30618, while the sum is 37.

The square root of 12739339 is about 3569.2210634815. The cubic root of 12739339 is about 233.5513049322.

The spelling of 12739339 in words is "twelve million, seven hundred thirty-nine thousand, three hundred thirty-nine".