109289111 has 4 divisors (see below), whose sum is σ = 109374672. Its totient is φ = 109203552.

The previous prime is 109289041. The next prime is 109289129. The reversal of 109289111 is 111982901.

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-109289111 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 (109280111) 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, 40835 + ... + 43428.

It is an arithmetic number, because the mean of its divisors is an integer number (27343668).

Almost surely, 2^109289111 is an apocalyptic number.

109289111 is a deficient number, since it is larger than the sum of its proper divisors (85561).

109289111 is an equidigital number, since it uses as much as digits as its factorization.

109289111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85560.

The product of its (nonzero) digits is 1296, while the sum is 32.

The square root of 109289111 is about 10454.1432456228. The cubic root of 109289111 is about 478.1075821527.

The spelling of 109289111 in words is "one hundred nine million, two hundred eighty-nine thousand, one hundred eleven".