823397223 has 16 divisors (see below), whose sum is σ = 1230039936. Its totient is φ = 485540640.

The previous prime is 823397189. The next prime is 823397269. The reversal of 823397223 is 322793328.

It is not a de Polignac number, because 823397223 - 2⁸ = 823396967 is a prime.

It is a super-2 number, since 2×823397223² = 1355965973688223458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823397123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335961 + ... + 338402.

It is an arithmetic number, because the mean of its divisors is an integer number (76877496).

Almost surely, 2^823397223 is an apocalyptic number.

823397223 is a deficient number, since it is larger than the sum of its proper divisors (406642713).

823397223 is a wasteful number, since it uses less digits than its factorization.

823397223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674414.

The product of its digits is 108864, while the sum is 39.

The square root of 823397223 is about 28694.8989020697. The cubic root of 823397223 is about 937.2809697025.

The spelling of 823397223 in words is "eight hundred twenty-three million, three hundred ninety-seven thousand, two hundred twenty-three".