489999999 has 8 divisors (see below), whose sum is σ = 665660592. Its totient is φ = 320503040.

The previous prime is 489999997. The next prime is 490000001. The reversal of 489999999 is 999999984.

It is an interprime number because it is at equal distance from previous prime (489999997) and next prime (490000001).

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 489999999 - 2¹ = 489999997 is a prime.

489999999 is a modest number, since divided by 99999 gives 4899 as remainder.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 489999999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489999997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1540722 + ... + 1541039.

It is an arithmetic number, because the mean of its divisors is an integer number (83207574).

Almost surely, 2^489999999 is an apocalyptic number.

489999999 is a deficient number, since it is larger than the sum of its proper divisors (175660593).

489999999 is a wasteful number, since it uses less digits than its factorization.

489999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3081817.

The product of its digits is 153055008, while the sum is 75.

The square root of 489999999 is about 22135.9435985910. The cubic root of 489999999 is about 788.3735157742.

The spelling of 489999999 in words is "four hundred eighty-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".