9223999 has 4 divisors (see below), whose sum is σ = 9261000. Its totient is φ = 9187000.

The previous prime is 9223997. The next prime is 9224009. The reversal of 9223999 is 9993229.

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

It is a cyclic number.

It is not a de Polignac number, because 9223999 - 2¹ = 9223997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9223997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18124 + ... + 18625.

It is an arithmetic number, because the mean of its divisors is an integer number (2315250).

Almost surely, 2^9223999 is an apocalyptic number.

9223999 is a deficient number, since it is larger than the sum of its proper divisors (37001).

9223999 is a wasteful number, since it uses less digits than its factorization.

9223999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37000.

The product of its digits is 78732, while the sum is 43.

The square root of 9223999 is about 3037.1037190060. The cubic root of 9223999 is about 209.7199517228.

The spelling of 9223999 in words is "nine million, two hundred twenty-three thousand, nine hundred ninety-nine".