108809905 has 8 divisors (see below), whose sum is σ = 131792832. Its totient is φ = 86233968.

The previous prime is 108809893. The next prime is 108809959. The reversal of 108809905 is 509908801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 108809905 - 2⁵ = 108809873 is a prime.

It is a super-2 number, since 2×108809905² = 23679190852218050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101157 + ... + 102226.

It is an arithmetic number, because the mean of its divisors is an integer number (16474104).

Almost surely, 2^108809905 is an apocalyptic number.

It is an amenable number.

108809905 is a deficient number, since it is larger than the sum of its proper divisors (22982927).

108809905 is a wasteful number, since it uses less digits than its factorization.

108809905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203495.

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 108809905 is about 10431.1986367819. The cubic root of 108809905 is about 477.4077634037.

The spelling of 108809905 in words is "one hundred eight million, eight hundred nine thousand, nine hundred five".