3971927972 has 12 divisors (see below), whose sum is σ = 7120407756. Its totient is φ = 1937525760.

The previous prime is 3971927909. The next prime is 3971927977. The reversal of 3971927972 is 2797291793.

It can be written as a sum of positive squares in 2 ways, for example, as 1673300836 + 2298627136 = 40906^2 + 47944^2 .

It is not an unprimeable number, because it can be changed into a prime (3971927977) 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, 12109373 + ... + 12109700.

It is an arithmetic number, because the mean of its divisors is an integer number (593367313).

Almost surely, 2^3971927972 is an apocalyptic number.

It is an amenable number.

3971927972 is a deficient number, since it is larger than the sum of its proper divisors (3148479784).

3971927972 is a wasteful number, since it uses less digits than its factorization.

3971927972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24219118 (or 24219116 counting only the distinct ones).

The product of its digits is 3000564, while the sum is 56.

The square root of 3971927972 is about 63023.2335888916. The cubic root of 3971927972 is about 1583.6788670024.

The spelling of 3971927972 in words is "three billion, nine hundred seventy-one million, nine hundred twenty-seven thousand, nine hundred seventy-two".