44421218 has 16 divisors (see below), whose sum is σ = 67988160. Its totient is φ = 21761136.

The previous prime is 44421161. The next prime is 44421253. The reversal of 44421218 is 81212444.

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 7 ways as a sum of consecutive naturals, for example, 57080 + ... + 57852.

It is an arithmetic number, because the mean of its divisors is an integer number (4249260).

Almost surely, 2^44421218 is an apocalyptic number.

44421218 is a deficient number, since it is larger than the sum of its proper divisors (23566942).

44421218 is a wasteful number, since it uses less digits than its factorization.

44421218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321.

The product of its digits is 2048, while the sum is 26.

The square root of 44421218 is about 6664.9244556859. The cubic root of 44421218 is about 354.1578078584.

The spelling of 44421218 in words is "forty-four million, four hundred twenty-one thousand, two hundred eighteen".