109549440 has 768 divisors, whose sum is σ = 534643200. Its totient is φ = 19906560.

The previous prime is 109549403. The next prime is 109549457. The reversal of 109549440 is 44945901.

It is a happy number.

109549440 is a `hidden beast` number, since 109 + 549 + 4 + 4 + 0 = 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 = 109549395 and 109549404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5765751 + ... + 5765769.

It is an arithmetic number, because the mean of its divisors is an integer number (696150).

Almost surely, 2^109549440 is an apocalyptic number.

109549440 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 109549440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267321600).

109549440 is an abundant number, since it is smaller than the sum of its proper divisors (425093760).

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

109549440 is a wasteful number, since it uses less digits than its factorization.

109549440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 109549440 is about 10466.5868362136. The cubic root of 109549440 is about 478.4869019583.

The spelling of 109549440 in words is "one hundred nine million, five hundred forty-nine thousand, four hundred forty".