9933933961 has 4 divisors (see below), whose sum is σ = 11353067392. Its totient is φ = 8514800532.

The previous prime is 9933933949. The next prime is 9933933991. The reversal of 9933933961 is 1693393399.

It is a happy number.

9933933961 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1693393399 = 229 ⋅7394731.

It is not a de Polignac number, because 9933933961 - 2⁵ = 9933933929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9933933941) 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, 709566705 + ... + 709566718.

It is an arithmetic number, because the mean of its divisors is an integer number (2838266848).

Almost surely, 2^9933933961 is an apocalyptic number.

It is an amenable number.

9933933961 is a deficient number, since it is larger than the sum of its proper divisors (1419133431).

9933933961 is a wasteful number, since it uses less digits than its factorization.

9933933961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419133430.

The product of its digits is 3188646, while the sum is 55.

The square root of 9933933961 is about 99669.1224050859. The cubic root of 9933933961 is about 2149.6797042965.

The spelling of 9933933961 in words is "nine billion, nine hundred thirty-three million, nine hundred thirty-three thousand, nine hundred sixty-one".