4421818 has 8 divisors (see below), whose sum is σ = 6645600. Its totient is φ = 2206620.

The previous prime is 4421801. The next prime is 4421831. The reversal of 4421818 is 8181244.

It is a sphenic number, since it is the product of 3 distinct primes.

4421818 is a modest number, since divided by 1818 gives 442 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648 + ... + 3043.

It is an arithmetic number, because the mean of its divisors is an integer number (830700).

Almost surely, 2^4421818 is an apocalyptic number.

4421818 is a deficient number, since it is larger than the sum of its proper divisors (2223782).

4421818 is a wasteful number, since it uses less digits than its factorization.

4421818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4292.

The product of its digits is 2048, while the sum is 28.

The square root of 4421818 is about 2102.8119269207. The cubic root of 4421818 is about 164.1346554206.

The spelling of 4421818 in words is "four million, four hundred twenty-one thousand, eight hundred eighteen".