12809339 has 4 divisors (see below), whose sum is σ = 12822600. Its totient is φ = 12796080.

The previous prime is 12809327. The next prime is 12809351. The reversal of 12809339 is 93390821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93390821 = 103 ⋅906707.

It is an interprime number because it is at equal distance from previous prime (12809327) and next prime (12809351).

It is a cyclic number.

It is not a de Polignac number, because 12809339 - 2¹⁶ = 12743803 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12809299 and 12809308.

It is not an unprimeable number, because it can be changed into a prime (12809359) 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, 5057 + ... + 7154.

It is an arithmetic number, because the mean of its divisors is an integer number (3205650).

Almost surely, 2^12809339 is an apocalyptic number.

12809339 is a deficient number, since it is larger than the sum of its proper divisors (13261).

12809339 is a wasteful number, since it uses less digits than its factorization.

12809339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13260.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 12809339 is about 3579.0136909489. The cubic root of 12809339 is about 233.9782956468.

The spelling of 12809339 in words is "twelve million, eight hundred nine thousand, three hundred thirty-nine".