39000009 has 12 divisors (see below), whose sum is σ = 52691856. Its totient is φ = 25658568.

The previous prime is 39000001. The next prime is 39000037. The reversal of 39000009 is 90000093.

39000009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39000009 - 2³ = 39000001 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39000001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17682 + ... + 19764.

It is an arithmetic number, because the mean of its divisors is an integer number (4390988).

Almost surely, 2^39000009 is an apocalyptic number.

It is an amenable number.

39000009 is a deficient number, since it is larger than the sum of its proper divisors (13691847).

39000009 is an equidigital number, since it uses as much as digits as its factorization.

39000009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244 (or 2165 counting only the distinct ones).

The product of its (nonzero) digits is 243, while the sum is 21.

The square root of 39000009 is about 6244.9987189750. The cubic root of 39000009 is about 339.1211703877.

The spelling of 39000009 in words is "thirty-nine million, nine", and thus it is an aban number and an uban number.