3859987716 has 144 divisors (see below), whose sum is σ = 10977657600. Its totient is φ = 1172216448.

The previous prime is 3859987711. The next prime is 3859987759. The reversal of 3859987716 is 6177899583.

3859987716 is a `hidden beast` number, since 38 + 599 + 8 + 7 + 7 + 1 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (3859987711) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1440570 + ... + 1443246.

Almost surely, 2^3859987716 is an apocalyptic number.

3859987716 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3859987716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5488828800).

3859987716 is an abundant number, since it is smaller than the sum of its proper divisors (7117669884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3859987716 is a wasteful number, since it uses less digits than its factorization.

3859987716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2795 (or 2774 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 63.

The square root of 3859987716 is about 62128.7994089698. The cubic root of 3859987716 is about 1568.6593442403.

The spelling of 3859987716 in words is "three billion, eight hundred fifty-nine million, nine hundred eighty-seven thousand, seven hundred sixteen".