9866223 has 12 divisors (see below), whose sum is σ = 14294280. Its totient is φ = 6557616.

The previous prime is 9866203. The next prime is 9866237. The reversal of 9866223 is 3226689.

It is not a de Polignac number, because 9866223 - 2⁹ = 9865711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9866203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1888 + ... + 4826.

It is an arithmetic number, because the mean of its divisors is an integer number (1191190).

Almost surely, 2^9866223 is an apocalyptic number.

9866223 is a deficient number, since it is larger than the sum of its proper divisors (4428057).

9866223 is a wasteful number, since it uses less digits than its factorization.

9866223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3318 (or 3315 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 9866223 is about 3141.0544407890. The cubic root of 9866223 is about 214.4784401367.

The spelling of 9866223 in words is "nine million, eight hundred sixty-six thousand, two hundred twenty-three".