3856385039 has 16 divisors (see below), whose sum is σ = 4274283552. Its totient is φ = 3456770688.

The previous prime is 3856385017. The next prime is 3856385069. The reversal of 3856385039 is 9305836583.

It is not a de Polignac number, because 3856385039 - 2⁸ = 3856384783 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 (3856385069) 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, 76769 + ... + 116645.

It is an arithmetic number, because the mean of its divisors is an integer number (267142722).

Almost surely, 2^3856385039 is an apocalyptic number.

3856385039 is a deficient number, since it is larger than the sum of its proper divisors (417898513).

3856385039 is a wasteful number, since it uses less digits than its factorization.

3856385039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40106.

The product of its (nonzero) digits is 2332800, while the sum is 50.

The square root of 3856385039 is about 62099.7990254397. The cubic root of 3856385039 is about 1568.1711620246.

The spelling of 3856385039 in words is "three billion, eight hundred fifty-six million, three hundred eighty-five thousand, thirty-nine".