808889 has 8 divisors (see below), whose sum is σ = 840840. Its totient is φ = 777600.

The previous prime is 808867. The next prime is 808919. The reversal of 808889 is 988808.

It can be written as a sum of positive squares in 4 ways, for example, as 13225 + 795664 = 115^2 + 892^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-808889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808589) 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, 4379 + ... + 4559.

It is an arithmetic number, because the mean of its divisors is an integer number (105105).

2⁸⁰⁸⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

808889 is a deficient number, since it is larger than the sum of its proper divisors (31951).

808889 is a wasteful number, since it uses less digits than its factorization.

808889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331.

The product of its (nonzero) digits is 36864, while the sum is 41.

The square root of 808889 is about 899.3825659862. The cubic root of 808889 is about 93.1743367238.

The spelling of 808889 in words is "eight hundred eight thousand, eight hundred eighty-nine".