1089166 has 16 divisors (see below), whose sum is σ = 1777104. Its totient is φ = 497664.

The previous prime is 1089161. The next prime is 1089191. The reversal of 1089166 is 6619801.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4110 + ... + 4366.

It is an arithmetic number, because the mean of its divisors is an integer number (111069).

2^1089166 is an apocalyptic number.

1089166 is a deficient number, since it is larger than the sum of its proper divisors (687938).

1089166 is a wasteful number, since it uses less digits than its factorization.

1089166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1089166 is about 1043.6311608993. The cubic root of 1089166 is about 102.8879921062.

The spelling of 1089166 in words is "one million, eighty-nine thousand, one hundred sixty-six".