39308013 has 6 divisors (see below), whose sum is σ = 56778254. Its totient is φ = 26205336.

The previous prime is 39308011. The next prime is 39308039. The reversal of 39308013 is 31080393.

It can be written as a sum of positive squares in only one way, i.e., 32114889 + 7193124 = 5667^2 + 2682^2 .

It is not a de Polignac number, because 39308013 - 2¹ = 39308011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39308011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2183770 + ... + 2183787.

Almost surely, 2^39308013 is an apocalyptic number.

It is an amenable number.

39308013 is a deficient number, since it is larger than the sum of its proper divisors (17470241).

39308013 is a wasteful number, since it uses less digits than its factorization.

39308013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4367563 (or 4367560 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 39308013 is about 6269.6102749693. The cubic root of 39308013 is about 340.0115711172.

The spelling of 39308013 in words is "thirty-nine million, three hundred eight thousand, thirteen".