9899717297 has 4 divisors (see below), whose sum is σ = 9912900096. Its totient is φ = 9886534500.

The previous prime is 9899717263. The next prime is 9899717323. The reversal of 9899717297 is 7927179989.

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: 7927179989 = 43 ⋅184353023.

It is a cyclic number.

It is not a de Polignac number, because 9899717297 - 2³² = 5604750001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9899717237) 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, 6590273 + ... + 6591774.

It is an arithmetic number, because the mean of its divisors is an integer number (2478225024).

Almost surely, 2^9899717297 is an apocalyptic number.

It is an amenable number.

9899717297 is a deficient number, since it is larger than the sum of its proper divisors (13182799).

9899717297 is a wasteful number, since it uses less digits than its factorization.

9899717297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13182798.

The product of its digits is 36006768, while the sum is 68.

The square root of 9899717297 is about 99497.3230644925. The cubic root of 9899717297 is about 2147.2087301669.

The spelling of 9899717297 in words is "nine billion, eight hundred ninety-nine million, seven hundred seventeen thousand, two hundred ninety-seven".