489257 has 2 divisors, whose sum is σ = 489258. Its totient is φ = 489256.

The previous prime is 489241. The next prime is 489263. The reversal of 489257 is 752984.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 326041 + 163216 = 571^2 + 404^2 .

It is a cyclic number.

It is not a de Polignac number, because 489257 - 2⁴ = 489241 is a prime.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 489257.

It is not a weakly prime, because it can be changed into another prime (489217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244628 + 244629.

It is an arithmetic number, because the mean of its divisors is an integer number (244629).

2⁴⁸⁹²⁵⁷ is an apocalyptic number.

It is an amenable number.

489257 is a deficient number, since it is larger than the sum of its proper divisors (1).

489257 is an equidigital number, since it uses as much as digits as its factorization.

489257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The square root of 489257 is about 699.4690843776. The cubic root of 489257 is about 78.7974837507.

The spelling of 489257 in words is "four hundred eighty-nine thousand, two hundred fifty-seven".