39239505 has 16 divisors (see below), whose sum is σ = 69759360. Its totient is φ = 20927664.

The previous prime is 39239491. The next prime is 39239509. The reversal of 39239505 is 50593293.

It is not a de Polignac number, because 39239505 - 2⁶ = 39239441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39239505.

It is not an unprimeable number, because it can be changed into a prime (39239509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145197 + ... + 145466.

It is an arithmetic number, because the mean of its divisors is an integer number (4359960).

Almost surely, 2^39239505 is an apocalyptic number.

It is an amenable number.

39239505 is a deficient number, since it is larger than the sum of its proper divisors (30519855).

39239505 is a wasteful number, since it uses less digits than its factorization.

39239505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290677 (or 290671 counting only the distinct ones).

The product of its (nonzero) digits is 36450, while the sum is 36.

The square root of 39239505 is about 6264.1443948875. The cubic root of 39239505 is about 339.8139264435.

The spelling of 39239505 in words is "thirty-nine million, two hundred thirty-nine thousand, five hundred five".