9929722401 has 24 divisors (see below), whose sum is σ = 14454550656. Its totient is φ = 6568401600.

The previous prime is 9929722381. The next prime is 9929722441. The reversal of 9929722401 is 1042279299.

9929722401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9929722401 - 2¹³ = 9929714209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9929722441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1332181 + ... + 1339613.

It is an arithmetic number, because the mean of its divisors is an integer number (602272944).

Almost surely, 2^9929722401 is an apocalyptic number.

It is an amenable number.

9929722401 is a deficient number, since it is larger than the sum of its proper divisors (4524828255).

9929722401 is a wasteful number, since it uses less digits than its factorization.

9929722401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8573 (or 8570 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 9929722401 is about 99647.9924584535. The cubic root of 9929722401 is about 2149.3758708295.

The spelling of 9929722401 in words is "nine billion, nine hundred twenty-nine million, seven hundred twenty-two thousand, four hundred one".