3971112788 has 12 divisors (see below), whose sum is σ = 6962155872. Its totient is φ = 1981925400.

The previous prime is 3971112781. The next prime is 3971112809. The reversal of 3971112788 is 8872111793.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3971112781) 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, 905288 + ... + 909663.

It is an arithmetic number, because the mean of its divisors is an integer number (580179656).

Almost surely, 2^3971112788 is an apocalyptic number.

It is an amenable number.

3971112788 is a deficient number, since it is larger than the sum of its proper divisors (2991043084).

3971112788 is a wasteful number, since it uses less digits than its factorization.

3971112788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1815502 (or 1815500 counting only the distinct ones).

The product of its digits is 169344, while the sum is 47.

The square root of 3971112788 is about 63016.7659278069. The cubic root of 3971112788 is about 1583.5705167661.

The spelling of 3971112788 in words is "three billion, nine hundred seventy-one million, one hundred twelve thousand, seven hundred eighty-eight".