39572009 has 4 divisors (see below), whose sum is σ = 40162704. Its totient is φ = 38981316.

The previous prime is 39571967. The next prime is 39572017. The reversal of 39572009 is 90027593.

39572009 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 a de Polignac number, because none of the positive numbers 2^k-39572009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39572009.

It is not an unprimeable number, because it can be changed into a prime (39572069) 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, 295247 + ... + 295380.

It is an arithmetic number, because the mean of its divisors is an integer number (10040676).

Almost surely, 2^39572009 is an apocalyptic number.

It is an amenable number.

39572009 is a deficient number, since it is larger than the sum of its proper divisors (590695).

39572009 is an equidigital number, since it uses as much as digits as its factorization.

39572009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590694.

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 39572009 is about 6290.6286649269. The cubic root of 39572009 is about 340.7710557212.

The spelling of 39572009 in words is "thirty-nine million, five hundred seventy-two thousand, nine".