4498821 has 10 divisors (see below), whose sum is σ = 6720582. Its totient is φ = 2999160.

The previous prime is 4498817. The next prime is 4498831. The reversal of 4498821 is 1288944.

It can be written as a sum of positive squares in only one way, i.e., 2772225 + 1726596 = 1665^2 + 1314^2 .

It is not a de Polignac number, because 4498821 - 2² = 4498817 is a prime.

4498821 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4498831) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 27690 + ... + 27851.

Almost surely, 2^4498821 is an apocalyptic number.

It is an amenable number.

4498821 is a deficient number, since it is larger than the sum of its proper divisors (2221761).

4498821 is an equidigital number, since it uses as much as digits as its factorization.

4498821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55553 (or 55544 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 4498821 is about 2121.0424323903. The cubic root of 4498821 is about 165.0819427697.

The spelling of 4498821 in words is "four million, four hundred ninety-eight thousand, eight hundred twenty-one".