489557 has 2 divisors, whose sum is σ = 489558. Its totient is φ = 489556.

The previous prime is 489553. The next prime is 489571. The reversal of 489557 is 755984.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 481636 + 7921 = 694^2 + 89^2 .

It is a cyclic number.

It is not a de Polignac number, because 489557 - 2² = 489553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 489557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489551) 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 as a sum of consecutive naturals, namely, 244778 + 244779.

It is an arithmetic number, because the mean of its divisors is an integer number (244779).

2⁴⁸⁹⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

489557 is a deficient number, since it is larger than the sum of its proper divisors (1).

489557 is an equidigital number, since it uses as much as digits as its factorization.

489557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 38.

The square root of 489557 is about 699.6834998769. The cubic root of 489557 is about 78.8135860004.

The spelling of 489557 in words is "four hundred eighty-nine thousand, five hundred fifty-seven".