9998297 has 4 divisors (see below), whose sum is σ = 10008960. Its totient is φ = 9987636.

The previous prime is 9998281. The next prime is 9998309. The reversal of 9998297 is 7928999.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7928999 = 13 ⋅609923.

It is a cyclic number.

It is not a de Polignac number, because 9998297 - 2⁴ = 9998281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9998207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3773 + ... + 5850.

It is an arithmetic number, because the mean of its divisors is an integer number (2502240).

Almost surely, 2^9998297 is an apocalyptic number.

It is an amenable number.

9998297 is a deficient number, since it is larger than the sum of its proper divisors (10663).

9998297 is a wasteful number, since it uses less digits than its factorization.

9998297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10662.

The product of its digits is 734832, while the sum is 53.

The square root of 9998297 is about 3162.0083807606. The cubic root of 9998297 is about 215.4312383013.

Subtracting from 9998297 its sum of digits (53), we obtain a square (9998244 = 3162²).

The spelling of 9998297 in words is "nine million, nine hundred ninety-eight thousand, two hundred ninety-seven".