39004009 has 4 divisors (see below), whose sum is σ = 42549840. Its totient is φ = 35458180.

The previous prime is 39003989. The next prime is 39004033. The reversal of 39004009 is 90040093.

39004009 is digitally balanced in base 2, 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 39004009 - 2⁵ = 39003977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39004109) 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 3 ways as a sum of consecutive naturals, for example, 1772899 + ... + 1772920.

It is an arithmetic number, because the mean of its divisors is an integer number (10637460).

Almost surely, 2^39004009 is an apocalyptic number.

It is an amenable number.

39004009 is a deficient number, since it is larger than the sum of its proper divisors (3545831).

39004009 is a wasteful number, since it uses less digits than its factorization.

39004009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3545830.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 39004009 is about 6245.3189670344. The cubic root of 39004009 is about 339.1327638748.

The spelling of 39004009 in words is "thirty-nine million, four thousand, nine".