9998223 has 4 divisors (see below), whose sum is σ = 13330968. Its totient is φ = 6665480.

The previous prime is 9998207. The next prime is 9998239. The reversal of 9998223 is 3228999.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (9998207) and next prime (9998239).

It is a cyclic number.

It is not a de Polignac number, because 9998223 - 2⁴ = 9998207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9998203) 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, 1666368 + ... + 1666373.

It is an arithmetic number, because the mean of its divisors is an integer number (3332742).

Almost surely, 2^9998223 is an apocalyptic number.

9998223 is a deficient number, since it is larger than the sum of its proper divisors (3332745).

9998223 is a wasteful number, since it uses less digits than its factorization.

9998223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3332744.

The product of its digits is 69984, while the sum is 42.

The square root of 9998223 is about 3161.9966793151. The cubic root of 9998223 is about 215.4307068124.

The spelling of 9998223 in words is "nine million, nine hundred ninety-eight thousand, two hundred twenty-three".