8309223 has 30 divisors (see below), whose sum is σ = 13462944. Its totient is φ = 5104944.

The previous prime is 8309173. The next prime is 8309227. The reversal of 8309223 is 3229038.

It is not a de Polignac number, because 8309223 - 2⁶ = 8309159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8309227) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 13386 + ... + 13992.

Almost surely, 2^8309223 is an apocalyptic number.

8309223 is a deficient number, since it is larger than the sum of its proper divisors (5153721).

8309223 is a wasteful number, since it uses less digits than its factorization.

8309223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 8309223 is about 2882.5722887727. The cubic root of 8309223 is about 202.5443524249.

The spelling of 8309223 in words is "eight million, three hundred nine thousand, two hundred twenty-three".