3933867961 has 4 divisors (see below), whose sum is σ = 3989274624. Its totient is φ = 3878461300.

The previous prime is 3933867953. The next prime is 3933867989. The reversal of 3933867961 is 1697683393.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3933867961 - 2³ = 3933867953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3933867761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27703225 + ... + 27703366.

It is an arithmetic number, because the mean of its divisors is an integer number (997318656).

Almost surely, 2^3933867961 is an apocalyptic number.

It is an amenable number.

3933867961 is a deficient number, since it is larger than the sum of its proper divisors (55406663).

3933867961 is an equidigital number, since it uses as much as digits as its factorization.

3933867961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55406662.

The product of its digits is 4408992, while the sum is 55.

The square root of 3933867961 is about 62720.5545335817. The cubic root of 3933867961 is about 1578.6042206446.

The spelling of 3933867961 in words is "three billion, nine hundred thirty-three million, eight hundred sixty-seven thousand, nine hundred sixty-one".