8138823 has 24 divisors (see below), whose sum is σ = 13636224. Its totient is φ = 4226640.

The previous prime is 8138807. The next prime is 8138861. The reversal of 8138823 is 3288318.

8138823 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8138823 - 2⁴ = 8138807 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8138863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 940 + ... + 4142.

It is an arithmetic number, because the mean of its divisors is an integer number (568176).

Almost surely, 2^8138823 is an apocalyptic number.

8138823 is a deficient number, since it is larger than the sum of its proper divisors (5497401).

8138823 is a wasteful number, since it uses less digits than its factorization.

8138823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3235 (or 3224 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 8138823 is about 2852.8622469373. The cubic root of 8138823 is about 201.1502305007.

It can be divided in two parts, 8 and 138823, that added together give a palindrome (138831).

The spelling of 8138823 in words is "eight million, one hundred thirty-eight thousand, eight hundred twenty-three".