12739329 has 24 divisors (see below), whose sum is σ = 19933920. Its totient is φ = 8039736.

The previous prime is 12739319. The next prime is 12739343. The reversal of 12739329 is 92393721.

It is not a de Polignac number, because 12739329 - 2⁵ = 12739297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12739293 and 12739302.

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 23 ways as a sum of consecutive naturals, for example, 9094 + ... + 10400.

It is an arithmetic number, because the mean of its divisors is an integer number (830580).

Almost surely, 2^12739329 is an apocalyptic number.

12739329 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12739329 is a deficient number, since it is larger than the sum of its proper divisors (7194591).

12739329 is a wasteful number, since it uses less digits than its factorization.

12739329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354 (or 1329 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 12739329 is about 3569.2196626153. The cubic root of 12739329 is about 233.5512438219.

The spelling of 12739329 in words is "twelve million, seven hundred thirty-nine thousand, three hundred twenty-nine".