9139823 has 24 divisors (see below), whose sum is σ = 11994624. Its totient is φ = 6879600.

The previous prime is 9139811. The next prime is 9139841. The reversal of 9139823 is 3289319.

It is not a de Polignac number, because 9139823 - 2⁴ = 9139807 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 (9139853) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16436 + ... + 16982.

It is an arithmetic number, because the mean of its divisors is an integer number (499776).

Almost surely, 2^9139823 is an apocalyptic number.

9139823 is a deficient number, since it is larger than the sum of its proper divisors (2854801).

9139823 is a wasteful number, since it uses less digits than its factorization.

9139823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603 (or 596 counting only the distinct ones).

The product of its digits is 11664, while the sum is 35.

The square root of 9139823 is about 3023.2140182263. The cubic root of 9139823 is about 209.0800499201.

The spelling of 9139823 in words is "nine million, one hundred thirty-nine thousand, eight hundred twenty-three".