498889 has 4 divisors (see below), whose sum is σ = 508356. Its totient is φ = 489424.

The previous prime is 498881. The next prime is 498907. The reversal of 498889 is 988894.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 455625 + 43264 = 675^2 + 208^2 .

It is a cyclic number.

It is not a de Polignac number, because 498889 - 2³ = 498881 is a prime.

It is an Ulam number.

It is a Duffinian number.

498889 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (498881) 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 in 3 ways as a sum of consecutive naturals, for example, 4654 + ... + 4759.

It is an arithmetic number, because the mean of its divisors is an integer number (127089).

2⁴⁹⁸⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

498889 is a deficient number, since it is larger than the sum of its proper divisors (9467).

498889 is an equidigital number, since it uses as much as digits as its factorization.

498889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9466.

The product of its digits is 165888, while the sum is 46.

The square root of 498889 is about 706.3207486688. The cubic root of 498889 is about 79.3112222509.

The spelling of 498889 in words is "four hundred ninety-eight thousand, eight hundred eighty-nine".