3975959866 has 8 divisors (see below), whose sum is σ = 5964300864. Its totient is φ = 1987859580.

The previous prime is 3975959851. The next prime is 3975959887. The reversal of 3975959866 is 6689595793.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10770 + ... + 89821.

It is an arithmetic number, because the mean of its divisors is an integer number (745537608).

Almost surely, 2^3975959866 is an apocalyptic number.

3975959866 is a deficient number, since it is larger than the sum of its proper divisors (1988340998).

3975959866 is a wasteful number, since it uses less digits than its factorization.

3975959866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120356.

The product of its digits is 110224800, while the sum is 67.

The square root of 3975959866 is about 63055.2128376394. The cubic root of 3975959866 is about 1584.2145485859.

The spelling of 3975959866 in words is "three billion, nine hundred seventy-five million, nine hundred fifty-nine thousand, eight hundred sixty-six".