4427218 has 4 divisors (see below), whose sum is σ = 6640830. Its totient is φ = 2213608.

The previous prime is 4427173. The next prime is 4427251. The reversal of 4427218 is 8127244.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3143529 + 1283689 = 1773^2 + 1133^2 .

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 as a sum of consecutive naturals, namely, 1106803 + ... + 1106806.

Almost surely, 2^4427218 is an apocalyptic number.

4427218 is a deficient number, since it is larger than the sum of its proper divisors (2213612).

4427218 is a wasteful number, since it uses less digits than its factorization.

4427218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2213611.

The product of its digits is 3584, while the sum is 28.

The square root of 4427218 is about 2104.0955301507. The cubic root of 4427218 is about 164.2014429263.

The spelling of 4427218 in words is "four million, four hundred twenty-seven thousand, two hundred eighteen".