489667420 has 48 divisors (see below), whose sum is σ = 1131768288. Its totient is φ = 176476160.

The previous prime is 489667391. The next prime is 489667433. The reversal of 489667420 is 24766984.

It is a happy number.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 15012 + ... + 34708.

It is an arithmetic number, because the mean of its divisors is an integer number (23578506).

Almost surely, 2^489667420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489667420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (565884144).

489667420 is an abundant number, since it is smaller than the sum of its proper divisors (642100868).

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

489667420 is a wasteful number, since it uses less digits than its factorization.

489667420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19830 (or 19828 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 46.

The square root of 489667420 is about 22128.4301295867. The cubic root of 489667420 is about 788.1951104553.

The spelling of 489667420 in words is "four hundred eighty-nine million, six hundred sixty-seven thousand, four hundred twenty".