489386789 has 6 divisors (see below), whose sum is σ = 498797586. Its totient is φ = 480150320.

The previous prime is 489386773. The next prime is 489386839. The reversal of 489386789 is 987683984.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 41344900 + 448041889 = 6430^2 + 21167^2 .

It is not a de Polignac number, because 489386789 - 2⁴ = 489386773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489386749) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84302 + ... + 89919.

It is an arithmetic number, because the mean of its divisors is an integer number (83132931).

Almost surely, 2^489386789 is an apocalyptic number.

It is an amenable number.

489386789 is a deficient number, since it is larger than the sum of its proper divisors (9410797).

489386789 is an equidigital number, since it uses as much as digits as its factorization.

489386789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174327 (or 174274 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 62.

The square root of 489386789 is about 22122.0882603790. The cubic root of 489386789 is about 788.0445087462.

The spelling of 489386789 in words is "four hundred eighty-nine million, three hundred eighty-six thousand, seven hundred eighty-nine".