9900223 has 8 divisors (see below), whose sum is σ = 10277280. Its totient is φ = 9525600.

The previous prime is 9900203. The next prime is 9900251. The reversal of 9900223 is 3220099.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9900223 - 2¹³ = 9892031 is a prime.

It is a Duffinian number.

9900223 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9900203) 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 7 ways as a sum of consecutive naturals, for example, 13773 + ... + 14473.

It is an arithmetic number, because the mean of its divisors is an integer number (1284660).

Almost surely, 2^9900223 is an apocalyptic number.

9900223 is a deficient number, since it is larger than the sum of its proper divisors (377057).

9900223 is a wasteful number, since it uses less digits than its factorization.

9900223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 9900223 is about 3146.4619813371. The cubic root of 9900223 is about 214.7245291191.

It can be divided in two parts, 990022 and 3, that added together give a square (990025 = 995²).

The spelling of 9900223 in words is "nine million, nine hundred thousand, two hundred twenty-three".