9923548961 has 4 divisors (see below), whose sum is σ = 9925957632. Its totient is φ = 9921140292.

The previous prime is 9923548909. The next prime is 9923549011. The reversal of 9923548961 is 1698453299.

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 a de Polignac number, because none of the positive numbers 2^k-9923548961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9923548897 and 9923548906.

It is not an unprimeable number, because it can be changed into a prime (9923542961) 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, 1198145 + ... + 1206398.

It is an arithmetic number, because the mean of its divisors is an integer number (2481489408).

Almost surely, 2^9923548961 is an apocalyptic number.

It is an amenable number.

9923548961 is a deficient number, since it is larger than the sum of its proper divisors (2408671).

9923548961 is a wasteful number, since it uses less digits than its factorization.

9923548961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408670.

The product of its digits is 4199040, while the sum is 56.

The square root of 9923548961 is about 99617.0114036754. The cubic root of 9923548961 is about 2148.9303466669.

The spelling of 9923548961 in words is "nine billion, nine hundred twenty-three million, five hundred forty-eight thousand, nine hundred sixty-one".