498821 has 4 divisors (see below), whose sum is σ = 514944. Its totient is φ = 482700.

The previous prime is 498803. The next prime is 498833. The reversal of 498821 is 128894.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 498821 - 2¹⁴ = 482437 is a prime.

It is a Duffinian number.

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 498821.

It is not an unprimeable number, because it can be changed into a prime (498881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8015 + ... + 8076.

It is an arithmetic number, because the mean of its divisors is an integer number (128736).

2⁴⁹⁸⁸²¹ is an apocalyptic number.

It is an amenable number.

498821 is a deficient number, since it is larger than the sum of its proper divisors (16123).

498821 is a wasteful number, since it uses less digits than its factorization.

498821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16122.

The product of its digits is 4608, while the sum is 32.

The square root of 498821 is about 706.2726102575. The cubic root of 498821 is about 79.3076186382.

The spelling of 498821 in words is "four hundred ninety-eight thousand, eight hundred twenty-one".