9952329921 has 16 divisors (see below), whose sum is σ = 13329152640. Its totient is φ = 6605235200.

The previous prime is 9952329917. The next prime is 9952329929. The reversal of 9952329921 is 1299232599.

It is a cyclic number.

It is not a de Polignac number, because 9952329921 - 2² = 9952329917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9952329929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1288156 + ... + 1295858.

It is an arithmetic number, because the mean of its divisors is an integer number (833072040).

Almost surely, 2^9952329921 is an apocalyptic number.

It is an amenable number.

9952329921 is a deficient number, since it is larger than the sum of its proper divisors (3376822719).

9952329921 is a wasteful number, since it uses less digits than its factorization.

9952329921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9576.

The product of its digits is 787320, while the sum is 51.

The square root of 9952329921 is about 99761.3648713769. The cubic root of 9952329921 is about 2151.0058333883.

The spelling of 9952329921 in words is "nine billion, nine hundred fifty-two million, three hundred twenty-nine thousand, nine hundred twenty-one".