39938105 has 8 divisors (see below), whose sum is σ = 47968200. Its totient is φ = 31922176.

The previous prime is 39938089. The next prime is 39938113. The reversal of 39938105 is 50183993.

It can be written as a sum of positive squares in 4 ways, for example, as 900601 + 39037504 = 949^2 + 6248^2 .

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 39938105 - 2⁴ = 39938089 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4211 + ... + 9879.

It is an arithmetic number, because the mean of its divisors is an integer number (5996025).

Almost surely, 2^39938105 is an apocalyptic number.

It is an amenable number.

39938105 is a deficient number, since it is larger than the sum of its proper divisors (8030095).

39938105 is a wasteful number, since it uses less digits than its factorization.

39938105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7083.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 39938105 is about 6319.6601965612. The cubic root of 39938105 is about 341.8187000036.

The spelling of 39938105 in words is "thirty-nine million, nine hundred thirty-eight thousand, one hundred five".