489457 has 2 divisors, whose sum is σ = 489458. Its totient is φ = 489456.

The previous prime is 489449. The next prime is 489479. The reversal of 489457 is 754984.

489457 is nontrivially palindromic in base 8.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 484416 + 5041 = 696^2 + 71^2 .

It is a cyclic number.

It is not a de Polignac number, because 489457 - 2³ = 489449 is a prime.

It is a nialpdrome in base 14.

It is not a weakly prime, because it can be changed into another prime (489407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244728 + 244729.

It is an arithmetic number, because the mean of its divisors is an integer number (244729).

2⁴⁸⁹⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

489457 is a deficient number, since it is larger than the sum of its proper divisors (1).

489457 is an equidigital number, since it uses as much as digits as its factorization.

489457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 37.

The square root of 489457 is about 699.6120353453. The cubic root of 489457 is about 78.8082193149.

It can be divided in two parts, 489 and 457, that added together give a triangular number (946 = T₄₃).

The spelling of 489457 in words is "four hundred eighty-nine thousand, four hundred fifty-seven".