9139438 has 32 divisors (see below), whose sum is σ = 18102528. Its totient is φ = 3350400.

The previous prime is 9139397. The next prime is 9139439. The reversal of 9139438 is 8349319.

It is a super-3 number, since 3×9139438³ (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9139397 and 9139406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9139439) 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, 873 + ... + 4363.

It is an arithmetic number, because the mean of its divisors is an integer number (565704).

Almost surely, 2^9139438 is an apocalyptic number.

9139438 is a deficient number, since it is larger than the sum of its proper divisors (8963090).

9139438 is a wasteful number, since it uses less digits than its factorization.

9139438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3528.

The product of its digits is 23328, while the sum is 37.

The square root of 9139438 is about 3023.1503435985. The cubic root of 9139438 is about 209.0771141612.

The spelling of 9139438 in words is "nine million, one hundred thirty-nine thousand, four hundred thirty-eight".