3947959886 has 16 divisors (see below), whose sum is σ = 6378976800. Its totient is φ = 1821705888.

The previous prime is 3947959853. The next prime is 3947959889. The reversal of 3947959886 is 6889597493.

3947959886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3947959886² = 31172774522930265992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3947959889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112460 + ... + 143328.

It is an arithmetic number, because the mean of its divisors is an integer number (398686050).

Almost surely, 2^3947959886 is an apocalyptic number.

3947959886 is a deficient number, since it is larger than the sum of its proper divisors (2431016914).

3947959886 is a wasteful number, since it uses less digits than its factorization.

3947959886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35803.

The product of its digits is 117573120, while the sum is 68.

The square root of 3947959886 is about 62832.7930781372. The cubic root of 3947959886 is about 1580.4869361211.

The spelling of 3947959886 in words is "three billion, nine hundred forty-seven million, nine hundred fifty-nine thousand, eight hundred eighty-six".