9999223 has 6 divisors (see below), whose sum is σ = 10827744. Its totient is φ = 9229896.

The previous prime is 9999221. The next prime is 9999233. The reversal of 9999223 is 3229999.

It is not a de Polignac number, because 9999223 - 2¹ = 9999221 is a prime.

It is a d-powerful number, because it can be written as 9² + 9³ + 9³ + 9⁴ + 2¹³ + 2²³ + 3¹³ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9999223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999221) 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 5 ways as a sum of consecutive naturals, for example, 29415 + ... + 29752.

It is an arithmetic number, because the mean of its divisors is an integer number (1804624).

Almost surely, 2^9999223 is an apocalyptic number.

9999223 is a deficient number, since it is larger than the sum of its proper divisors (828521).

9999223 is a wasteful number, since it uses less digits than its factorization.

9999223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59193 (or 59180 counting only the distinct ones).

The product of its digits is 78732, while the sum is 43.

The square root of 9999223 is about 3162.1548032947. The cubic root of 9999223 is about 215.4378888728.

The spelling of 9999223 in words is "nine million, nine hundred ninety-nine thousand, two hundred twenty-three".