3971587632 has 40 divisors (see below), whose sum is σ = 10799933760. Its totient is φ = 1254185280.

The previous prime is 3971587621. The next prime is 3971587637. The reversal of 3971587632 is 2367851793.

It is not an unprimeable number, because it can be changed into a prime (3971587637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2176494 + ... + 2178317.

It is an arithmetic number, because the mean of its divisors is an integer number (269998344).

Almost surely, 2^3971587632 is an apocalyptic number.

It is an amenable number.

3971587632 is an abundant number, since it is smaller than the sum of its proper divisors (6828346128).

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

3971587632 is a wasteful number, since it uses less digits than its factorization.

3971587632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4354841 (or 4354835 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 51.

The square root of 3971587632 is about 63020.5334157051. The cubic root of 3971587632 is about 1583.6336324912.

The spelling of 3971587632 in words is "three billion, nine hundred seventy-one million, five hundred eighty-seven thousand, six hundred thirty-two".