789489 has 6 divisors (see below), whose sum is σ = 1140386. Its totient is φ = 526320.

The previous prime is 789473. The next prime is 789491. The reversal of 789489 is 984987.

789489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 613089 + 176400 = 783^2 + 420^2 .

It is not a de Polignac number, because 789489 - 2⁴ = 789473 is a prime.

It is a super-2 number, since 2×789489² = 1246585762242, which contains 22 as substring.

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 (789419) 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, 43852 + ... + 43869.

2⁷⁸⁹⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

789489 is a deficient number, since it is larger than the sum of its proper divisors (350897).

789489 is a wasteful number, since it uses less digits than its factorization.

789489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87727 (or 87724 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 789489 is about 888.5319352730. The cubic root of 789489 is about 92.4234184753.

The spelling of 789489 in words is "seven hundred eighty-nine thousand, four hundred eighty-nine".