3986642056 has 32 divisors (see below), whose sum is σ = 7582649760. Its totient is φ = 1964714752.

The previous prime is 3986642047. The next prime is 3986642081. The reversal of 3986642056 is 6502466893.

It is an unprimeable number.

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, 287376 + ... + 300928.

It is an arithmetic number, because the mean of its divisors is an integer number (236957805).

Almost surely, 2^3986642056 is an apocalyptic number.

It is an amenable number.

3986642056 is a deficient number, since it is larger than the sum of its proper divisors (3596007704).

3986642056 is a wasteful number, since it uses less digits than its factorization.

3986642056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14085 (or 14081 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 49.

The square root of 3986642056 is about 63139.8610704838. The cubic root of 3986642056 is about 1585.6320467852.

The spelling of 3986642056 in words is "three billion, nine hundred eighty-six million, six hundred forty-two thousand, fifty-six".