9920223 has 12 divisors (see below), whose sum is σ = 15083640. Its totient is φ = 6265296.

The previous prime is 9920219. The next prime is 9920249. The reversal of 9920223 is 3220299.

It is not a de Polignac number, because 9920223 - 2² = 9920219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9920203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28836 + ... + 29177.

It is an arithmetic number, because the mean of its divisors is an integer number (1256970).

Almost surely, 2^9920223 is an apocalyptic number.

9920223 is a deficient number, since it is larger than the sum of its proper divisors (5163417).

9920223 is a wasteful number, since it uses less digits than its factorization.

9920223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58038 (or 58035 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 9920223 is about 3149.6385506912. The cubic root of 9920223 is about 214.8690242473.

It can be divided in two parts, 99202 and 23, that added together give a square (99225 = 315²).

The spelling of 9920223 in words is "nine million, nine hundred twenty thousand, two hundred twenty-three".