9138429 has 24 divisors (see below), whose sum is σ = 13920192. Its totient is φ = 5765760.

The previous prime is 9138427. The next prime is 9138433. The reversal of 9138429 is 9248319.

9138429 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 9138429 - 2¹ = 9138427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9138393 and 9138402.

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 23 ways as a sum of consecutive naturals, for example, 26949 + ... + 27285.

It is an arithmetic number, because the mean of its divisors is an integer number (580008).

Almost surely, 2^9138429 is an apocalyptic number.

It is an amenable number.

9138429 is a deficient number, since it is larger than the sum of its proper divisors (4781763).

9138429 is a wasteful number, since it uses less digits than its factorization.

9138429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497 (or 494 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 9138429 is about 3022.9834600937. The cubic root of 9138429 is about 209.0694197942.

The spelling of 9138429 in words is "nine million, one hundred thirty-eight thousand, four hundred twenty-nine".