498857 has 2 divisors, whose sum is σ = 498858. Its totient is φ = 498856.

The previous prime is 498833. The next prime is 498859. The reversal of 498857 is 758894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 355216 + 143641 = 596^2 + 379^2 .

It is a cyclic number.

It is not a de Polignac number, because 498857 - 2¹² = 494761 is a prime.

Together with 498859, it forms a pair of twin primes.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 498857.

It is not a weakly prime, because it can be changed into another prime (498859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249428 + 249429.

It is an arithmetic number, because the mean of its divisors is an integer number (249429).

2⁴⁹⁸⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

498857 is a deficient number, since it is larger than the sum of its proper divisors (1).

498857 is an equidigital number, since it uses as much as digits as its factorization.

498857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 41.

The square root of 498857 is about 706.2980957075. The cubic root of 498857 is about 79.3095264740.

The spelling of 498857 in words is "four hundred ninety-eight thousand, eight hundred fifty-seven".