489607920 has 120 divisors (see below), whose sum is σ = 1649076000. Its totient is φ = 130180608.

The previous prime is 489607919. The next prime is 489607931. The reversal of 489607920 is 29706984.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 315306 + ... + 316854.

It is an arithmetic number, because the mean of its divisors is an integer number (13742300).

Almost surely, 2^489607920 is an apocalyptic number.

489607920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489607920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (824538000).

489607920 is an abundant number, since it is smaller than the sum of its proper divisors (1159468080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

489607920 is a wasteful number, since it uses less digits than its factorization.

489607920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007 (or 1998 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 489607920 is about 22127.0856644069. The cubic root of 489607920 is about 788.1631843582.

The spelling of 489607920 in words is "four hundred eighty-nine million, six hundred seven thousand, nine hundred twenty".