3986637866 has 8 divisors (see below), whose sum is σ = 6038014944. Its totient is φ = 1973966220.

The previous prime is 3986637857. The next prime is 3986637923. The reversal of 3986637866 is 6687366893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 3986637799 and 3986637808.

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 3 ways as a sum of consecutive naturals, for example, 9676100 + ... + 9676511.

It is an arithmetic number, because the mean of its divisors is an integer number (754751868).

Almost surely, 2^3986637866 is an apocalyptic number.

3986637866 is a deficient number, since it is larger than the sum of its proper divisors (2051377078).

3986637866 is a wasteful number, since it uses less digits than its factorization.

3986637866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19352716.

The product of its digits is 47029248, while the sum is 62.

The square root of 3986637866 is about 63139.8278901677. The cubic root of 3986637866 is about 1585.6314912801.

The spelling of 3986637866 in words is "three billion, nine hundred eighty-six million, six hundred thirty-seven thousand, eight hundred sixty-six".