1089089 has 4 divisors (see below), whose sum is σ = 1093680. Its totient is φ = 1084500.

The previous prime is 1089047. The next prime is 1089091. The reversal of 1089089 is 9809801.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9809801 = 29 ⋅338269.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1089089 is a prime.

It is a super-2 number, since 2×1089089² = 2372229699842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1089029) 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, 1919 + ... + 2420.

It is an arithmetic number, because the mean of its divisors is an integer number (273420).

2^1089089 is an apocalyptic number.

It is an amenable number.

1089089 is a deficient number, since it is larger than the sum of its proper divisors (4591).

1089089 is an equidigital number, since it uses as much as digits as its factorization.

1089089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4590.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 1089089 is about 1043.5942698195. The cubic root of 1089089 is about 102.8855674491.

The spelling of 1089089 in words is "one million, eighty-nine thousand, eighty-nine".