489161 has 2 divisors, whose sum is σ = 489162. Its totient is φ = 489160.

The previous prime is 489157. The next prime is 489179. The reversal of 489161 is 161984.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 313600 + 175561 = 560^2 + 419^2 .

It is a cyclic number.

It is not a de Polignac number, because 489161 - 2² = 489157 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (489101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244580 + 244581.

It is an arithmetic number, because the mean of its divisors is an integer number (244581).

2⁴⁸⁹¹⁶¹ is an apocalyptic number.

It is an amenable number.

489161 is a deficient number, since it is larger than the sum of its proper divisors (1).

489161 is an equidigital number, since it uses as much as digits as its factorization.

489161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 29.

The square root of 489161 is about 699.4004575349. The cubic root of 489161 is about 78.7923296407.

The spelling of 489161 in words is "four hundred eighty-nine thousand, one hundred sixty-one".