3961933971 has 4 divisors (see below), whose sum is σ = 5282578632. Its totient is φ = 2641289312.

The previous prime is 3961933967. The next prime is 3961933991. The reversal of 3961933971 is 1793391693.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3961933971 - 2² = 3961933967 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3961933961) 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, 660322326 + ... + 660322331.

It is an arithmetic number, because the mean of its divisors is an integer number (1320644658).

Almost surely, 2^3961933971 is an apocalyptic number.

3961933971 is a deficient number, since it is larger than the sum of its proper divisors (1320644661).

3961933971 is a wasteful number, since it uses less digits than its factorization.

3961933971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320644660.

The product of its digits is 826686, while the sum is 51.

The square root of 3961933971 is about 62943.8954228287. The cubic root of 3961933971 is about 1582.3494889660.

The spelling of 3961933971 in words is "three billion, nine hundred sixty-one million, nine hundred thirty-three thousand, nine hundred seventy-one".