4480821 has 6 divisors (see below), whose sum is σ = 6472310. Its totient is φ = 2987208.

The previous prime is 4480807. The next prime is 4480831. The reversal of 4480821 is 1280844.

It can be written as a sum of positive squares in only one way, i.e., 3132900 + 1347921 = 1770^2 + 1161^2 .

It is not a de Polignac number, because 4480821 - 2⁶ = 4480757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4480831) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 248926 + ... + 248943.

Almost surely, 2^4480821 is an apocalyptic number.

It is an amenable number.

4480821 is a deficient number, since it is larger than the sum of its proper divisors (1991489).

4480821 is a wasteful number, since it uses less digits than its factorization.

4480821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497875 (or 497872 counting only the distinct ones).

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

The square root of 4480821 is about 2116.7949829873. The cubic root of 4480821 is about 164.8614815416.

The spelling of 4480821 in words is "four million, four hundred eighty thousand, eight hundred twenty-one".