Subtracting from 9438 its reverse (8349), we obtain a square (1089 = 332).
It is an alternating number because its digits alternate between odd and even.
It is a plaindrome in base 8, base 12 and base 16.
It is a nialpdrome in base 11.
It is a zygodrome in base 12.
It is a congruent number.
29438 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 9438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11172).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
9438 is a wasteful number, since it uses less digits than its factorization.
9438 is an evil number, because the sum of its binary digits is even.
The square root of 9438 is about 97.1493695296. The cubic root of 9438 is about 21.1329434548.
The spelling of 9438 in words is "nine thousand, four hundred thirty-eight".