109891199 has 8 divisors (see below), whose sum is σ = 120012240. Its totient is φ = 99792000.

The previous prime is 109891181. The next prime is 109891219. The reversal of 109891199 is 991198901.

It is a happy number.

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

It is not a de Polignac number, because 109891199 - 2⁸ = 109890943 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 (109891109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6149 + ... + 16049.

It is an arithmetic number, because the mean of its divisors is an integer number (15001530).

Almost surely, 2^109891199 is an apocalyptic number.

109891199 is a deficient number, since it is larger than the sum of its proper divisors (10121041).

109891199 is a wasteful number, since it uses less digits than its factorization.

109891199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10921.

The product of its (nonzero) digits is 52488, while the sum is 47.

The square root of 109891199 is about 10482.9003143214. The cubic root of 109891199 is about 478.9839604812.

The spelling of 109891199 in words is "one hundred nine million, eight hundred ninety-one thousand, one hundred ninety-nine".