489405040 has 80 divisors (see below), whose sum is σ = 1249920000. Its totient is φ = 177382656.

The previous prime is 489405019. The next prime is 489405089. The reversal of 489405040 is 40504984.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 489404987 and 489405005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27961 + ... + 41959.

It is an arithmetic number, because the mean of its divisors is an integer number (15624000).

Almost surely, 2^489405040 is an apocalyptic number.

489405040 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 489405040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (624960000).

489405040 is an abundant number, since it is smaller than the sum of its proper divisors (760514960).

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

489405040 is a wasteful number, since it uses less digits than its factorization.

489405040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14054 (or 14048 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 489405040 is about 22122.5007627980. The cubic root of 489405040 is about 788.0543049660.

The spelling of 489405040 in words is "four hundred eighty-nine million, four hundred five thousand, forty".