109383840 has 144 divisors (see below), whose sum is σ = 383547528. Its totient is φ = 28366848.

The previous prime is 109383839. The next prime is 109383851. The reversal of 109383840 is 48383901.

It can be written as a sum of positive squares in 4 ways, for example, as 103795344 + 5588496 = 10188^2 + 2364^2 .

It is a tau number, because it is divible by the number of its divisors (144).

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 = 109383795 and 109383804.

It is a congruent number.

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, 52254 + ... + 54306.

Almost surely, 2^109383840 is an apocalyptic number.

109383840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109383840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191773764).

109383840 is an abundant number, since it is smaller than the sum of its proper divisors (274163688).

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

109383840 is a wasteful number, since it uses less digits than its factorization.

109383840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111 (or 2100 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 109383840 is about 10458.6729559730. The cubic root of 109383840 is about 478.2456793930.

The spelling of 109383840 in words is "one hundred nine million, three hundred eighty-three thousand, eight hundred forty".