9722697917 has 4 divisors (see below), whose sum is σ = 10234418880. Its totient is φ = 9210976956.

The previous prime is 9722697883. The next prime is 9722697961. The reversal of 9722697917 is 7197962279.

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: 7197962279 = 73 ⋅98602223.

It is a cyclic number.

It is not a de Polignac number, because 9722697917 - 2³² = 5427730621 is a prime.

It is a super-2 number, since 2×9722697917² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9722697967) 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, 255860453 + ... + 255860490.

It is an arithmetic number, because the mean of its divisors is an integer number (2558604720).

Almost surely, 2^9722697917 is an apocalyptic number.

It is an amenable number.

9722697917 is a deficient number, since it is larger than the sum of its proper divisors (511720963).

9722697917 is a wasteful number, since it uses less digits than its factorization.

9722697917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511720962.

The product of its digits is 6001128, while the sum is 59.

The square root of 9722697917 is about 98603.7419016134. The cubic root of 9722697917 is about 2134.3334171631. Note that the first 3 decimals are identical.

The spelling of 9722697917 in words is "nine billion, seven hundred twenty-two million, six hundred ninety-seven thousand, nine hundred seventeen".