889809 has 8 divisors (see below), whose sum is σ = 1193760. Its totient is φ = 589536.

The previous prime is 889783. The next prime is 889829. The reversal of 889809 is 908988.

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

It is not a de Polignac number, because 889809 - 2¹² = 885713 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (889829) 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, 292 + ... + 1365.

It is an arithmetic number, because the mean of its divisors is an integer number (149220).

2⁸⁸⁹⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

889809 is a deficient number, since it is larger than the sum of its proper divisors (303951).

889809 is a wasteful number, since it uses less digits than its factorization.

889809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1839.

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 889809 is about 943.2968779764. The cubic root of 889809 is about 96.1831356598.

The spelling of 889809 in words is "eight hundred eighty-nine thousand, eight hundred nine".