9722912997 has 48 divisors (see below), whose sum is σ = 15851794560. Its totient is φ = 5191133184.

The previous prime is 9722912977. The next prime is 9722913029. The reversal of 9722912997 is 7992192279.

It is not a de Polignac number, because 9722912997 - 2¹⁸ = 9722650853 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9722912977) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 544629 + ... + 562197.

It is an arithmetic number, because the mean of its divisors is an integer number (330245720).

Almost surely, 2^9722912997 is an apocalyptic number.

It is an amenable number.

9722912997 is a deficient number, since it is larger than the sum of its proper divisors (6128881563).

9722912997 is a wasteful number, since it uses less digits than its factorization.

9722912997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17690 (or 17671 counting only the distinct ones).

The product of its digits is 2571912, while the sum is 57.

The square root of 9722912997 is about 98604.8325235635. The cubic root of 9722912997 is about 2134.3491552175.

The spelling of 9722912997 in words is "nine billion, seven hundred twenty-two million, nine hundred twelve thousand, nine hundred ninety-seven".