9898217 has 4 divisors (see below), whose sum is σ = 11312256. Its totient is φ = 8484180.

The previous prime is 9898177. The next prime is 9898223. The reversal of 9898217 is 7128989.

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.

It is a cyclic number.

It is not a de Polignac number, because 9898217 - 2¹² = 9894121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9898237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707009 + ... + 707022.

It is an arithmetic number, because the mean of its divisors is an integer number (2828064).

Almost surely, 2^9898217 is an apocalyptic number.

It is an amenable number.

9898217 is a deficient number, since it is larger than the sum of its proper divisors (1414039).

9898217 is a wasteful number, since it uses less digits than its factorization.

9898217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414038.

The product of its digits is 72576, while the sum is 44.

The square root of 9898217 is about 3146.1431944525. The cubic root of 9898217 is about 214.7100255232.

The spelling of 9898217 in words is "nine million, eight hundred ninety-eight thousand, two hundred seventeen".