3987283840 has 32 divisors (see below), whose sum is σ = 9532101960. Its totient is φ = 1594913280.

The previous prime is 3987283801. The next prime is 3987283847. The reversal of 3987283840 is 483827893.

3987283840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3987283847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3114426 + ... + 3115705.

Almost surely, 2^3987283840 is an apocalyptic number.

It is an amenable number.

3987283840 is an abundant number, since it is smaller than the sum of its proper divisors (5544818120).

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

3987283840 is an equidigital number, since it uses as much as digits as its factorization.

3987283840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6230150 (or 6230138 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 52.

The square root of 3987283840 is about 63144.9431071087. The cubic root of 3987283840 is about 1585.7171291395.

The spelling of 3987283840 in words is "three billion, nine hundred eighty-seven million, two hundred eighty-three thousand, eight hundred forty".