3856376987 has 4 divisors (see below), whose sum is σ = 3858861720. Its totient is φ = 3853892256.

The previous prime is 3856376981. The next prime is 3856377013. The reversal of 3856376987 is 7896736583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7896736583 = 307 ⋅25722269.

It is a cyclic number.

It is not a de Polignac number, because 3856376987 - 2⁸ = 3856376731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3856376981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1240037 + ... + 1243142.

It is an arithmetic number, because the mean of its divisors is an integer number (964715430).

Almost surely, 2^3856376987 is an apocalyptic number.

3856376987 is a deficient number, since it is larger than the sum of its proper divisors (2484733).

3856376987 is a wasteful number, since it uses less digits than its factorization.

3856376987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2484732.

The product of its digits is 45722880, while the sum is 62.

The square root of 3856376987 is about 62099.7341942782. The cubic root of 3856376987 is about 1568.1700705946.

The spelling of 3856376987 in words is "three billion, eight hundred fifty-six million, three hundred seventy-six thousand, nine hundred eighty-seven".