3887915139 has 8 divisors (see below), whose sum is σ = 5759874320. Its totient is φ = 2591943408.

The previous prime is 3887915137. The next prime is 3887915167. The reversal of 3887915139 is 9315197883.

3887915139 is a `hidden beast` number, since 38 + 8 + 7 + 91 + 513 + 9 = 666.

It is not a de Polignac number, because 3887915139 - 2¹ = 3887915137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3887915137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71998402 + ... + 71998455.

It is an arithmetic number, because the mean of its divisors is an integer number (719984290).

Almost surely, 2^3887915139 is an apocalyptic number.

3887915139 is a deficient number, since it is larger than the sum of its proper divisors (1871959181).

3887915139 is a wasteful number, since it uses less digits than its factorization.

3887915139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143996866 (or 143996860 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 54.

The square root of 3887915139 is about 62353.1485893054. The cubic root of 3887915139 is about 1572.4333961779.

The spelling of 3887915139 in words is "three billion, eight hundred eighty-seven million, nine hundred fifteen thousand, one hundred thirty-nine".