1111889 has 8 divisors (see below), whose sum is σ = 1200960. Its totient is φ = 1026256.

The previous prime is 1111867. The next prime is 1111897. The reversal of 1111889 is 9881111.

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

It is a cyclic number.

It is not a de Polignac number, because 1111889 - 2¹² = 1107793 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1111189) 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 7 ways as a sum of consecutive naturals, for example, 167 + ... + 1500.

It is an arithmetic number, because the mean of its divisors is an integer number (150120).

2^1111889 is an apocalyptic number.

It is an amenable number.

1111889 is a deficient number, since it is larger than the sum of its proper divisors (89071).

1111889 is a wasteful number, since it uses less digits than its factorization.

1111889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719.

The product of its digits is 576, while the sum is 29.

The square root of 1111889 is about 1054.4614739288. The cubic root of 1111889 is about 103.5985820431.

The spelling of 1111889 in words is "one million, one hundred eleven thousand, eight hundred eighty-nine".