13000039 has 4 divisors (see below), whose sum is σ = 14000056. Its totient is φ = 12000024.

The previous prime is 13000027. The next prime is 13000049. The reversal of 13000039 is 93000031.

It is a happy number.

13000039 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13000039 - 2¹⁹ = 12475751 is a prime.

It is a Duffinian number.

13000039 is a modest number, since divided by 39 gives 13 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 12999986 and 13000031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13000049) 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, 499989 + ... + 500014.

It is an arithmetic number, because the mean of its divisors is an integer number (3500014).

Almost surely, 2^13000039 is an apocalyptic number.

13000039 is a deficient number, since it is larger than the sum of its proper divisors (1000017).

13000039 is a wasteful number, since it uses less digits than its factorization.

13000039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000016.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 13000039 is about 3605.5566837868. The cubic root of 13000039 is about 235.1337039053.

The spelling of 13000039 in words is "thirteen million, thirty-nine", and thus it is an aban number and an uban number.