109768091 has 4 divisors (see below), whose sum is σ = 110495184. Its totient is φ = 109041000.

The previous prime is 109768069. The next prime is 109768147. The reversal of 109768091 is 190867901.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109768091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109768291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363320 + ... + 363621.

It is an arithmetic number, because the mean of its divisors is an integer number (27623796).

Almost surely, 2^109768091 is an apocalyptic number.

109768091 is a deficient number, since it is larger than the sum of its proper divisors (727093).

109768091 is an equidigital number, since it uses as much as digits as its factorization.

109768091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727092.

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 109768091 is about 10477.0268206204. The cubic root of 109768091 is about 478.8050295894.

The spelling of 109768091 in words is "one hundred nine million, seven hundred sixty-eight thousand, ninety-one".