13439329 has 4 divisors (see below), whose sum is σ = 13639984. Its totient is φ = 13238676.

The previous prime is 13439317. The next prime is 13439339. The reversal of 13439329 is 92393431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92393431 = 13 ⋅7107187.

It is a cyclic number.

It is not a de Polignac number, because 13439329 - 2⁵ = 13439297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13439294 and 13439303.

It is not an unprimeable number, because it can be changed into a prime (13439339) 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, 100227 + ... + 100360.

It is an arithmetic number, because the mean of its divisors is an integer number (3409996).

Almost surely, 2^13439329 is an apocalyptic number.

It is an amenable number.

13439329 is a deficient number, since it is larger than the sum of its proper divisors (200655).

13439329 is an equidigital number, since it uses as much as digits as its factorization.

13439329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200654.

The product of its digits is 17496, while the sum is 34.

The square root of 13439329 is about 3665.9690396947. The cubic root of 13439329 is about 237.7529213268.

The spelling of 13439329 in words is "thirteen million, four hundred thirty-nine thousand, three hundred twenty-nine".