3986789880 has 128 divisors (see below), whose sum is σ = 12190464000. Its totient is φ = 1042854912.

The previous prime is 3986789861. The next prime is 3986789887. The reversal of 3986789880 is 889876893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3986789887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1742097 + ... + 1744383.

It is an arithmetic number, because the mean of its divisors is an integer number (95238000).

Almost surely, 2^3986789880 is an apocalyptic number.

3986789880 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3986789880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6095232000).

3986789880 is an abundant number, since it is smaller than the sum of its proper divisors (8203674120).

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

3986789880 is a wasteful number, since it uses less digits than its factorization.

3986789880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573 (or 2569 counting only the distinct ones).

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

The square root of 3986789880 is about 63141.0316672130. The cubic root of 3986789880 is about 1585.6516448640.

The spelling of 3986789880 in words is "three billion, nine hundred eighty-six million, seven hundred eighty-nine thousand, eight hundred eighty".