489428505 has 48 divisors (see below), whose sum is σ = 923832000. Its totient is φ = 238750848.

The previous prime is 489428497. The next prime is 489428539. The reversal of 489428505 is 505824984.

It is not a de Polignac number, because 489428505 - 2³ = 489428497 is a prime.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14926 + ... + 34664.

It is an arithmetic number, because the mean of its divisors is an integer number (19246500).

Almost surely, 2^489428505 is an apocalyptic number.

489428505 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

489428505 is a deficient number, since it is larger than the sum of its proper divisors (434403495).

489428505 is a wasteful number, since it uses less digits than its factorization.

489428505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19798 (or 19795 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The square root of 489428505 is about 22123.0310988345. The cubic root of 489428505 is about 788.0668994410.

The spelling of 489428505 in words is "four hundred eighty-nine million, four hundred twenty-eight thousand, five hundred five".