109539144 has 96 divisors (see below), whose sum is σ = 348566400. Its totient is φ = 30637440.

The previous prime is 109539137. The next prime is 109539163. The reversal of 109539144 is 441935901.

It is a happy number.

109539144 is a `hidden beast` number, since 109 + 539 + 14 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 109539099 and 109539108.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4977 + ... + 15615.

It is an arithmetic number, because the mean of its divisors is an integer number (3630900).

Almost surely, 2^109539144 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 109539144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174283200).

109539144 is an abundant number, since it is smaller than the sum of its proper divisors (239027256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109539144 is a wasteful number, since it uses less digits than its factorization.

109539144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10675 (or 10668 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 109539144 is about 10466.0949737713. The cubic root of 109539144 is about 478.4719112975.

The spelling of 109539144 in words is "one hundred nine million, five hundred thirty-nine thousand, one hundred forty-four".