609818489 has 4 divisors (see below), whose sum is σ = 696935424. Its totient is φ = 522701556.

The previous prime is 609818431. The next prime is 609818491. The reversal of 609818489 is 984818906.

609818489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 609818489 - 2⁸ = 609818233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 609818489.

It is not an unprimeable number, because it can be changed into a prime (609818089) 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, 43558457 + ... + 43558470.

It is an arithmetic number, because the mean of its divisors is an integer number (174233856).

Almost surely, 2^609818489 is an apocalyptic number.

It is an amenable number.

609818489 is a deficient number, since it is larger than the sum of its proper divisors (87116935).

609818489 is an equidigital number, since it uses as much as digits as its factorization.

609818489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87116934.

The product of its (nonzero) digits is 995328, while the sum is 53.

The square root of 609818489 is about 24694.5032142783. The cubic root of 609818489 is about 848.0084813031.

The spelling of 609818489 in words is "six hundred nine million, eight hundred eighteen thousand, four hundred eighty-nine".