8387861339 has 16 divisors (see below), whose sum is σ = 9869610240. Its totient is φ = 7027808160.

The previous prime is 8387861323. The next prime is 8387861357. The reversal of 8387861339 is 9331687838.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 8387861339 - 2⁴ = 8387861323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8387861359) 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, 47192 + ... + 137850.

It is an arithmetic number, because the mean of its divisors is an integer number (616850640).

Almost surely, 2^8387861339 is an apocalyptic number.

8387861339 is a deficient number, since it is larger than the sum of its proper divisors (1481748901).

8387861339 is a wasteful number, since it uses less digits than its factorization.

8387861339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91330.

The product of its digits is 5225472, while the sum is 56.

The square root of 8387861339 is about 91585.2681330355. The cubic root of 8387861339 is about 2031.8130597749.

The spelling of 8387861339 in words is "eight billion, three hundred eighty-seven million, eight hundred sixty-one thousand, three hundred thirty-nine".