3971013388 has 12 divisors (see below), whose sum is σ = 7251415920. Its totient is φ = 1899180272.

The previous prime is 3971013331. The next prime is 3971013401. The reversal of 3971013388 is 8833101793.

3971013388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21581503 + ... + 21581686.

It is an arithmetic number, because the mean of its divisors is an integer number (604284660).

Almost surely, 2^3971013388 is an apocalyptic number.

It is an amenable number.

3971013388 is a deficient number, since it is larger than the sum of its proper divisors (3280402532).

3971013388 is a wasteful number, since it uses less digits than its factorization.

3971013388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43163216 (or 43163214 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 3971013388 is about 63015.9772438705. The cubic root of 3971013388 is about 1583.5573039941.

The spelling of 3971013388 in words is "three billion, nine hundred seventy-one million, thirteen thousand, three hundred eighty-eight".