4408821 has 6 divisors (see below), whose sum is σ = 6368310. Its totient is φ = 2939208.

The previous prime is 4408813. The next prime is 4408837. The reversal of 4408821 is 1288044.

It can be written as a sum of positive squares in only one way, i.e., 3651921 + 756900 = 1911^2 + 870^2 .

It is not a de Polignac number, because 4408821 - 2³ = 4408813 is a prime.

It is a super-2 number, since 2×4408821² = 38875405220082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4408861) 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, 244926 + ... + 244943.

It is an arithmetic number, because the mean of its divisors is an integer number (1061385).

Almost surely, 2^4408821 is an apocalyptic number.

It is an amenable number.

4408821 is a deficient number, since it is larger than the sum of its proper divisors (1959489).

4408821 is a wasteful number, since it uses less digits than its factorization.

4408821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489875 (or 489872 counting only the distinct ones).

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

The square root of 4408821 is about 2099.7192669498. The cubic root of 4408821 is about 163.9736845542.

It can be divided in two parts, 440 and 8821, that added together give a cube (9261 = 21³).

The spelling of 4408821 in words is "four million, four hundred eight thousand, eight hundred twenty-one".