109559808 has 90 divisors (see below), whose sum is σ = 316922424. Its totient is φ = 36470784.

The previous prime is 109559789. The next prime is 109559837. The reversal of 109559808 is 808955901.

109559808 is a `hidden beast` number, since 10 + 9 + 559 + 80 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 147085 + ... + 147827.

Almost surely, 2^109559808 is an apocalyptic number.

109559808 is a gapful number since it is divisible by the number (18) 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 109559808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158461212).

109559808 is an abundant number, since it is smaller than the sum of its proper divisors (207362616).

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

109559808 is an frugal number, since it uses more digits than its factorization.

109559808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777 (or 748 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 45.

The square root of 109559808 is about 10467.0821148972. The cubic root of 109559808 is about 478.5019964998.

The spelling of 109559808 in words is "one hundred nine million, five hundred fifty-nine thousand, eight hundred eight".