489897 has 12 divisors (see below), whose sum is σ = 732420. Its totient is φ = 315168.

The previous prime is 489887. The next prime is 489901. The reversal of 489897 is 798984.

It can be written as a sum of positive squares in 2 ways, for example, as 281961 + 207936 = 531^2 + 456^2 .

It is not a de Polignac number, because 489897 - 2⁶ = 489833 is a prime.

489897 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (489817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 678 + ... + 1199.

It is an arithmetic number, because the mean of its divisors is an integer number (61035).

2⁴⁸⁹⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

489897 is a deficient number, since it is larger than the sum of its proper divisors (242523).

489897 is a wasteful number, since it uses less digits than its factorization.

489897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912 (or 1909 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 489897 is about 699.9264247048. The cubic root of 489897 is about 78.8318272663.

The spelling of 489897 in words is "four hundred eighty-nine thousand, eight hundred ninety-seven".