109190091 has 16 divisors (see below), whose sum is σ = 150958080. Its totient is φ = 70128960.

The previous prime is 109190083. The next prime is 109190113. The reversal of 109190091 is 190091901.

It is not a de Polignac number, because 109190091 - 2³ = 109190083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109190021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19150 + ... + 24188.

It is an arithmetic number, because the mean of its divisors is an integer number (9434880).

Almost surely, 2^109190091 is an apocalyptic number.

109190091 is a deficient number, since it is larger than the sum of its proper divisors (41767989).

109190091 is a wasteful number, since it uses less digits than its factorization.

109190091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5306.

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

The square root of 109190091 is about 10449.4062510747. The cubic root of 109190091 is about 477.9631441037.

The spelling of 109190091 in words is "one hundred nine million, one hundred ninety thousand, ninety-one".