9138423 has 16 divisors (see below), whose sum is σ = 14052096. Its totient is φ = 5174400.

The previous prime is 9138421. The next prime is 9138427. The reversal of 9138423 is 3248319.

9138423 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 9138423 - 2¹ = 9138421 is a prime.

9138423 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9138421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 448 + ... + 4298.

It is an arithmetic number, because the mean of its divisors is an integer number (878256).

Almost surely, 2^9138423 is an apocalyptic number.

9138423 is a deficient number, since it is larger than the sum of its proper divisors (4913673).

9138423 is a wasteful number, since it uses less digits than its factorization.

9138423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3974.

The product of its digits is 5184, while the sum is 30.

The square root of 9138423 is about 3022.9824676964. The cubic root of 9138423 is about 209.0693740380.

The spelling of 9138423 in words is "nine million, one hundred thirty-eight thousand, four hundred twenty-three".