489775 has 24 divisors (see below), whose sum is σ = 718704. Its totient is φ = 326400.

The previous prime is 489761. The next prime is 489791. The reversal of 489775 is 577984.

It is not a de Polignac number, because 489775 - 2⁵ = 489743 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 3507 + ... + 3643.

It is an arithmetic number, because the mean of its divisors is an integer number (29946).

2⁴⁸⁹⁷⁷⁵ is an apocalyptic number.

489775 is a deficient number, since it is larger than the sum of its proper divisors (228929).

489775 is a wasteful number, since it uses less digits than its factorization.

489775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 166 counting only the distinct ones).

The product of its digits is 70560, while the sum is 40.

The square root of 489775 is about 699.8392672607. The cubic root of 489775 is about 78.8252828420.

Subtracting 489775 from its reverse (577984), we obtain a square (88209 = 297²).

The spelling of 489775 in words is "four hundred eighty-nine thousand, seven hundred seventy-five".