489145 has 4 divisors (see below), whose sum is σ = 586980. Its totient is φ = 391312.

The previous prime is 489133. The next prime is 489157. The reversal of 489145 is 541984.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (489133) and next prime (489157).

It can be written as a sum of positive squares in 2 ways, for example, as 251001 + 238144 = 501^2 + 488^2 .

It is a cyclic number.

It is not a de Polignac number, because 489145 - 2⁵ = 489113 is a prime.

489145 is a lucky 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 3 ways as a sum of consecutive naturals, for example, 48910 + ... + 48919.

It is an arithmetic number, because the mean of its divisors is an integer number (146745).

2⁴⁸⁹¹⁴⁵ is an apocalyptic number.

It is an amenable number.

489145 is a deficient number, since it is larger than the sum of its proper divisors (97835).

489145 is an equidigital number, since it uses as much as digits as its factorization.

489145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97834.

The product of its digits is 5760, while the sum is 31.

The square root of 489145 is about 699.3890190731. The cubic root of 489145 is about 78.7914705568.

The spelling of 489145 in words is "four hundred eighty-nine thousand, one hundred forty-five".