989089 has 4 divisors (see below), whose sum is σ = 997956. Its totient is φ = 980224.

The previous prime is 989081. The next prime is 989099. The reversal of 989089 is 980989.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 980989 = 19 ⋅51631.

It can be written as a sum of positive squares in 2 ways, for example, as 380689 + 608400 = 617^2 + 780^2 .

It is a cyclic number.

It is not a de Polignac number, because 989089 - 2³ = 989081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989081) 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, 4264 + ... + 4489.

It is an arithmetic number, because the mean of its divisors is an integer number (249489).

2⁹⁸⁹⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

989089 is a deficient number, since it is larger than the sum of its proper divisors (8867).

989089 is a wasteful number, since it uses less digits than its factorization.

989089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8866.

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 989089 is about 994.5295370174. The cubic root of 989089 is about 99.6349691461.

Subtracting from 989089 its reverse (980989), we obtain a square (8100 = 90²).

It can be divided in two parts, 9 and 89089, that added together give a palindrome (89098).

The spelling of 989089 in words is "nine hundred eighty-nine thousand, eighty-nine".