39387487313 has 2 divisors, whose sum is σ = 39387487314. Its totient is φ = 39387487312.

The previous prime is 39387487297. The next prime is 39387487427. The reversal of 39387487313 is 31378478393.

39387487313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31170608704 + 8216878609 = 176552^2 + 90647^2 .

It is a cyclic number.

It is not a de Polignac number, because 39387487313 - 2⁴ = 39387487297 is a prime.

It is not a weakly prime, because it can be changed into another prime (39387487213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19693743656 + 19693743657.

It is an arithmetic number, because the mean of its divisors is an integer number (19693743657).

Almost surely, 2^39387487313 is an apocalyptic number.

It is an amenable number.

39387487313 is a deficient number, since it is larger than the sum of its proper divisors (1).

39387487313 is an equidigital number, since it uses as much as digits as its factorization.

39387487313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9144576, while the sum is 56.

The spelling of 39387487313 in words is "thirty-nine billion, three hundred eighty-seven million, four hundred eighty-seven thousand, three hundred thirteen".