1089111 has 4 divisors (see below), whose sum is σ = 1452152. Its totient is φ = 726072.

The previous prime is 1089107. The next prime is 1089113. The reversal of 1089111 is 1119801.

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

It is not a de Polignac number, because 1089111 - 2² = 1089107 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181516 + ... + 181521.

It is an arithmetic number, because the mean of its divisors is an integer number (363038).

2^1089111 is an apocalyptic number.

1089111 is a deficient number, since it is larger than the sum of its proper divisors (363041).

1089111 is an equidigital number, since it uses as much as digits as its factorization.

1089111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363040.

The product of its (nonzero) digits is 72, while the sum is 21.

The square root of 1089111 is about 1043.6048102610. The cubic root of 1089111 is about 102.8862602199.

The spelling of 1089111 in words is "one million, eighty-nine thousand, one hundred eleven".