3965912847 has 48 divisors (see below), whose sum is σ = 6774112800. Its totient is φ = 2296968192.

The previous prime is 3965912771. The next prime is 3965912851. The reversal of 3965912847 is 7482195693.

3965912847 is a `hidden beast` number, since 3 + 9 + 6 + 591 + 2 + 8 + 47 = 666.

3965912847 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-3965912847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3965912793 and 3965912802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3965912887) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16779 + ... + 90627.

It is an arithmetic number, because the mean of its divisors is an integer number (141127350).

Almost surely, 2^3965912847 is an apocalyptic number.

3965912847 is a deficient number, since it is larger than the sum of its proper divisors (2808199953).

3965912847 is a wasteful number, since it uses less digits than its factorization.

3965912847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73894 (or 73882 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 3965912847 is about 62975.4940194994. The cubic root of 3965912847 is about 1582.8790170529.

The spelling of 3965912847 in words is "three billion, nine hundred sixty-five million, nine hundred twelve thousand, eight hundred forty-seven".