9912223 has 4 divisors (see below), whose sum is σ = 9990400. Its totient is φ = 9834048.

The previous prime is 9912211. The next prime is 9912251. The reversal of 9912223 is 3222199.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9912223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9912191 and 9912200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9910223) 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 3 ways as a sum of consecutive naturals, for example, 38898 + ... + 39151.

It is an arithmetic number, because the mean of its divisors is an integer number (2497600).

Almost surely, 2^9912223 is an apocalyptic number.

9912223 is a deficient number, since it is larger than the sum of its proper divisors (78177).

9912223 is a wasteful number, since it uses less digits than its factorization.

9912223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78176.

The product of its digits is 1944, while the sum is 28.

The square root of 9912223 is about 3148.3683075523. The cubic root of 9912223 is about 214.8112495221.

The spelling of 9912223 in words is "nine million, nine hundred twelve thousand, two hundred twenty-three".