3947505560 has 64 divisors (see below), whose sum is σ = 9093427200. Its totient is φ = 1541563776.

The previous prime is 3947505547. The next prime is 3947505577. The reversal of 3947505560 is 655057493.

3947505560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 822929 + ... + 827711.

It is an arithmetic number, because the mean of its divisors is an integer number (142084800).

Almost surely, 2^3947505560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3947505560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4546713600).

3947505560 is an abundant number, since it is smaller than the sum of its proper divisors (5145921640).

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

3947505560 is a wasteful number, since it uses less digits than its factorization.

3947505560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5280 (or 5276 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 44.

The square root of 3947505560 is about 62829.1776167729. The cubic root of 3947505560 is about 1580.4263070136.

The spelling of 3947505560 in words is "three billion, nine hundred forty-seven million, five hundred five thousand, five hundred sixty".