Adding to 111444444 its reverse (444444111), we get a palindrome (555888555).
It is a nude number because it is divisible by every one of its digits.
It is a plaindrome in base 10.
It is a zygodrome in base 10.
It is a congruent number.
Almost surely, 2111444444 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 111444444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149263240).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
111444444 is a wasteful number, since it uses less digits than its factorization.
111444444 is an evil number, because the sum of its binary digits is even.
The square root of 111444444 is about 10556.7250603584. The cubic root of 111444444 is about 481.2301260360.
The spelling of 111444444 in words is "one hundred eleven million, four hundred forty-four thousand, four hundred forty-four".