489999 has 8 divisors (see below), whose sum is σ = 657072. Its totient is φ = 324800.

The previous prime is 489989. The next prime is 490001. The reversal of 489999 is 999984.

It is a happy number.

It is a Cunningham number, because it is equal to 700²-1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 489999 - 2⁷ = 489871 is a prime.

489999 is a modest number, since divided by 999 gives 489 as remainder.

It is a plaindrome in base 5 and base 10.

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 489999.

It is not an unprimeable number, because it can be changed into a prime (489959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349 + ... + 1049.

It is an arithmetic number, because the mean of its divisors is an integer number (82134).

2⁴⁸⁹⁹⁹⁹ is an apocalyptic number.

489999 is a deficient number, since it is larger than the sum of its proper divisors (167073).

489999 is a wasteful number, since it uses less digits than its factorization.

489999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937.

The product of its digits is 209952, while the sum is 48.

The square root of 489999 is about 699.9992857139. Note that the first 3 decimals coincide. The cubic root of 489999 is about 78.8372980002.

The spelling of 489999 in words is "four hundred eighty-nine thousand, nine hundred ninety-nine".