489784450 has 24 divisors (see below), whose sum is σ = 964588932. Its totient is φ = 184389120.

The previous prime is 489784441. The next prime is 489784457. The reversal of 489784450 is 54487984.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 243890689 + 245893761 = 15617^2 + 15681^2 .

It is a junction number, because it is equal to n+sod(n) for n = 489784394 and 489784403.

It is not an unprimeable number, because it can be changed into a prime (489784457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 287259 + ... + 288958.

Almost surely, 2^489784450 is an apocalyptic number.

489784450 is a deficient number, since it is larger than the sum of its proper divisors (474804482).

489784450 is a wasteful number, since it uses less digits than its factorization.

489784450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576246 (or 576241 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 49.

The square root of 489784450 is about 22131.0743074077. The cubic root of 489784450 is about 788.2578980552.

The spelling of 489784450 in words is "four hundred eighty-nine million, seven hundred eighty-four thousand, four hundred fifty".