489959990 has 32 divisors (see below), whose sum is σ = 954084096. Its totient is φ = 180086400.

The previous prime is 489959971. The next prime is 489959993. The reversal of 489959990 is 99959984.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489959993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20540 + ... + 37440.

It is an arithmetic number, because the mean of its divisors is an integer number (29815128).

Almost surely, 2^489959990 is an apocalyptic number.

489959990 is a deficient number, since it is larger than the sum of its proper divisors (464124106).

489959990 is a wasteful number, since it uses less digits than its factorization.

489959990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17144.

The product of its (nonzero) digits is 9447840, while the sum is 62.

The square root of 489959990 is about 22135.0398689499. The cubic root of 489959990 is about 788.3520580228.

It can be divided in two parts, 48995 and 9990, that added together give a palindrome (58985).

The spelling of 489959990 in words is "four hundred eighty-nine million, nine hundred fifty-nine thousand, nine hundred ninety".