9911223 has 12 divisors (see below), whose sum is σ = 16361488. Its totient is φ = 5663520.

The previous prime is 9911201. The next prime is 9911249. The reversal of 9911223 is 3221199.

It is not a de Polignac number, because 9911223 - 2¹³ = 9903031 is a prime.

It is a Duffinian number.

9911223 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9911263) 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, 78598 + ... + 78723.

Almost surely, 2^9911223 is an apocalyptic number.

9911223 is a deficient number, since it is larger than the sum of its proper divisors (6450265).

9911223 is a wasteful number, since it uses less digits than its factorization.

9911223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157334 (or 157331 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 9911223 is about 3148.2094911235. The cubic root of 9911223 is about 214.8040254960.

The spelling of 9911223 in words is "nine million, nine hundred eleven thousand, two hundred twenty-three".