39684913 has 8 divisors (see below), whose sum is σ = 41548608. Its totient is φ = 37832784.

The previous prime is 39684907. The next prime is 39684923. The reversal of 39684913 is 31948693.

39684913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39684913 - 2⁵ = 39684881 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 39684913.

It is not an unprimeable number, because it can be changed into a prime (39684923) 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 7 ways as a sum of consecutive naturals, for example, 4570 + ... + 10012.

It is an arithmetic number, because the mean of its divisors is an integer number (5193576).

Almost surely, 2^39684913 is an apocalyptic number.

It is an amenable number.

39684913 is a deficient number, since it is larger than the sum of its proper divisors (1863695).

39684913 is a wasteful number, since it uses less digits than its factorization.

39684913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5783.

The product of its digits is 139968, while the sum is 43.

The square root of 39684913 is about 6299.5962569041. The cubic root of 39684913 is about 341.0948357813.

The spelling of 39684913 in words is "thirty-nine million, six hundred eighty-four thousand, nine hundred thirteen".