39392915013 has 12 divisors (see below), whose sum is σ = 56902599468. Its totient is φ = 26261148480.

The previous prime is 39392915011. The next prime is 39392915021. The reversal of 39392915013 is 31051929393.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17625748644 + 21767166369 = 132762^2 + 147537^2 .

It is not a de Polignac number, because 39392915013 - 2¹ = 39392915011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39392915013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39392915011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 532081 + ... + 601577.

It is an arithmetic number, because the mean of its divisors is an integer number (4741883289).

Almost surely, 2^39392915013 is an apocalyptic number.

It is an amenable number.

39392915013 is a deficient number, since it is larger than the sum of its proper divisors (17509684455).

39392915013 is a wasteful number, since it uses less digits than its factorization.

39392915013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132484 (or 132481 counting only the distinct ones).

The product of its (nonzero) digits is 196830, while the sum is 45.

The spelling of 39392915013 in words is "thirty-nine billion, three hundred ninety-two million, nine hundred fifteen thousand, thirteen".