489578 has 16 divisors (see below), whose sum is σ = 794880. Its totient is φ = 225456.

The previous prime is 489571. The next prime is 489613. The reversal of 489578 is 875984.

It is not an unprimeable number, because it can be changed into a prime (489571) by changing a digit.

489578 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 1151 + ... + 1517.

It is an arithmetic number, because the mean of its divisors is an integer number (49680).

2⁴⁸⁹⁵⁷⁸ is an apocalyptic number.

489578 is a deficient number, since it is larger than the sum of its proper divisors (305302).

489578 is a wasteful number, since it uses less digits than its factorization.

489578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421.

The product of its digits is 80640, while the sum is 41.

The square root of 489578 is about 699.6985065012. The cubic root of 489578 is about 78.8147129115.

The spelling of 489578 in words is "four hundred eighty-nine thousand, five hundred seventy-eight".