448821 has 12 divisors (see below), whose sum is σ = 672672. Its totient is φ = 299052.

The previous prime is 448807. The next prime is 448829. The reversal of 448821 is 128844.

It is not a de Polignac number, because 448821 - 2⁹ = 448309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (448829) 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 11 ways as a sum of consecutive naturals, for example, 681 + ... + 1166.

It is an arithmetic number, because the mean of its divisors is an integer number (56056).

2⁴⁴⁸⁸²¹ is an apocalyptic number.

It is an amenable number.

448821 is a deficient number, since it is larger than the sum of its proper divisors (223851).

448821 is an equidigital number, since it uses as much as digits as its factorization.

448821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1862 (or 1850 counting only the distinct ones).

The product of its digits is 2048, while the sum is 27.

The square root of 448821 is about 669.9410421821. The cubic root of 448821 is about 76.5639603498.

The spelling of 448821 in words is "four hundred forty-eight thousand, eight hundred twenty-one".