4421816 has 24 divisors (see below), whose sum is σ = 9509160. Its totient is φ = 1888320.

The previous prime is 4421801. The next prime is 4421831. The reversal of 4421816 is 6181244.

It is an interprime number because it is at equal distance from previous prime (4421801) and next prime (4421831).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 15596 + ... + 15876.

It is an arithmetic number, because the mean of its divisors is an integer number (396215).

Almost surely, 2^4421816 is an apocalyptic number.

It is an amenable number.

4421816 is an abundant number, since it is smaller than the sum of its proper divisors (5087344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4421816 is an equidigital number, since it uses as much as digits as its factorization.

4421816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575 (or 290 counting only the distinct ones).

The product of its digits is 1536, while the sum is 26.

The square root of 4421816 is about 2102.8114513670. The cubic root of 4421816 is about 164.1346306744.

The spelling of 4421816 in words is "four million, four hundred twenty-one thousand, eight hundred sixteen".