489489 has 32 divisors (see below), whose sum is σ = 881664. Its totient is φ = 233280.

The previous prime is 489487. The next prime is 489493. The reversal of 489489 is 984984.

It is not a de Polignac number, because 489489 - 2¹ = 489487 is a prime.

It is a super-2 number, since 2×489489² = 479198962242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 489489.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 489489.

It is not an unprimeable number, because it can be changed into a prime (489487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2922 + ... + 3084.

It is an arithmetic number, because the mean of its divisors is an integer number (27552).

2⁴⁸⁹⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

489489 is a deficient number, since it is larger than the sum of its proper divisors (392175).

489489 is a wasteful number, since it uses less digits than its factorization.

489489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197.

The product of its digits is 82944, while the sum is 42.

The square root of 489489 is about 699.6349047896. The cubic root of 489489 is about 78.8099367338.

The spelling of 489489 in words is "four hundred eighty-nine thousand, four hundred eighty-nine".