3986665599 has 16 divisors (see below), whose sum is σ = 6131697408. Its totient is φ = 2256802752.

The previous prime is 3986665591. The next prime is 3986665679. The reversal of 3986665599 is 9955666893.

It is not a de Polignac number, because 3986665599 - 2³ = 3986665591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3986665591) 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, 884862 + ... + 889355.

It is an arithmetic number, because the mean of its divisors is an integer number (383231088).

Almost surely, 2^3986665599 is an apocalyptic number.

3986665599 is a deficient number, since it is larger than the sum of its proper divisors (2145031809).

3986665599 is a wasteful number, since it uses less digits than its factorization.

3986665599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774334.

The product of its digits is 94478400, while the sum is 66.

The square root of 3986665599 is about 63140.0475055254. The cubic root of 3986665599 is about 1585.6351680806.

The spelling of 3986665599 in words is "three billion, nine hundred eighty-six million, six hundred sixty-five thousand, five hundred ninety-nine".