109091109 has 8 divisors (see below), whose sum is σ = 145647040. Its totient is φ = 72631296.

The previous prime is 109091063. The next prime is 109091131. The reversal of 109091109 is 901190901.

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

It is not a de Polignac number, because 109091109 - 2¹⁷ = 108960037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109091189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21337 + ... + 25950.

It is an arithmetic number, because the mean of its divisors is an integer number (18205880).

Almost surely, 2^109091109 is an apocalyptic number.

It is an amenable number.

109091109 is a deficient number, since it is larger than the sum of its proper divisors (36555931).

109091109 is an equidigital number, since it uses as much as digits as its factorization.

109091109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48059.

The product of its (nonzero) digits is 729, while the sum is 30.

The square root of 109091109 is about 10444.6689272566. The cubic root of 109091109 is about 477.8186741849.

The spelling of 109091109 in words is "one hundred nine million, ninety-one thousand, one hundred nine".