609889 has 8 divisors (see below), whose sum is σ = 702848. Its totient is φ = 518400.

The previous prime is 609887. The next prime is 609907. The reversal of 609889 is 988906.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 609889 - 2¹ = 609887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609887) 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, 769 + ... + 1345.

It is an arithmetic number, because the mean of its divisors is an integer number (87856).

2⁶⁰⁹⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

609889 is a deficient number, since it is larger than the sum of its proper divisors (92959).

609889 is a wasteful number, since it uses less digits than its factorization.

609889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 609889 is about 780.9539038893. The cubic root of 609889 is about 84.8041164045.

The spelling of 609889 in words is "six hundred nine thousand, eight hundred eighty-nine".