3986887980 has 24 divisors (see below), whose sum is σ = 11163286512. Its totient is φ = 1063170112.

The previous prime is 3986887903. The next prime is 3986888029. The reversal of 3986887980 is 897886893.

3986887980 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33224007 + ... + 33224126.

It is an arithmetic number, because the mean of its divisors is an integer number (465136938).

Almost surely, 2^3986887980 is an apocalyptic number.

3986887980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3986887980 is an abundant number, since it is smaller than the sum of its proper divisors (7176398532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3986887980 is a wasteful number, since it uses less digits than its factorization.

3986887980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66448145 (or 66448143 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 66.

The square root of 3986887980 is about 63141.8084948475. The cubic root of 3986887980 is about 1585.6646504111.

The spelling of 3986887980 in words is "three billion, nine hundred eighty-six million, eight hundred eighty-seven thousand, nine hundred eighty".