3971863332 has 18 divisors (see below), whose sum is σ = 10039987958. Its totient is φ = 1323954432.

The previous prime is 3971863331. The next prime is 3971863333. The reversal of 3971863332 is 2333681793.

3971863332 is a `hidden beast` number, since 3 + 9 + 7 + 1 + 8 + 633 + 3 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (3971863331) and next prime (3971863333).

It can be written as a sum of positive squares in only one way, i.e., 2844515556 + 1127347776 = 53334^2 + 33576^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×3971863332² = 31551396656172284448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3971863331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55164733 + ... + 55164804.

Almost surely, 2^3971863332 is an apocalyptic number.

It is an amenable number.

3971863332 is an abundant number, since it is smaller than the sum of its proper divisors (6068124626).

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

3971863332 is a wasteful number, since it uses less digits than its factorization.

3971863332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110329547 (or 110329542 counting only the distinct ones).

The product of its digits is 489888, while the sum is 45.

The square root of 3971863332 is about 63022.7207600561. The cubic root of 3971863332 is about 1583.6702759136.

The spelling of 3971863332 in words is "three billion, nine hundred seventy-one million, eight hundred sixty-three thousand, three hundred thirty-two".