489669 has 4 divisors (see below), whose sum is σ = 652896. Its totient is φ = 326444.

The previous prime is 489659. The next prime is 489673. The reversal of 489669 is 966984.

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 489669 - 2⁴ = 489653 is a prime.

It is a super-2 number, since 2×489669² = 479551459122, which contains 22 as substring.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 489669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81609 + ... + 81614.

It is an arithmetic number, because the mean of its divisors is an integer number (163224).

2⁴⁸⁹⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

489669 is a deficient number, since it is larger than the sum of its proper divisors (163227).

489669 is a wasteful number, since it uses less digits than its factorization.

489669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163226.

The product of its digits is 93312, while the sum is 42.

The square root of 489669 is about 699.7635314876. The cubic root of 489669 is about 78.8195958205.

The spelling of 489669 in words is "four hundred eighty-nine thousand, six hundred sixty-nine".