444111218 has 4 divisors (see below), whose sum is σ = 666166830. Its totient is φ = 222055608.

The previous prime is 444111211. The next prime is 444111223. The reversal of 444111218 is 812111444.

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., 319944769 + 124166449 = 17887^2 + 11143^2 .

It is not an unprimeable number, because it can be changed into a prime (444111211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111027803 + ... + 111027806.

Almost surely, 2^444111218 is an apocalyptic number.

444111218 is a deficient number, since it is larger than the sum of its proper divisors (222055612).

444111218 is a wasteful number, since it uses less digits than its factorization.

444111218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222055611.

The product of its digits is 1024, while the sum is 26.

The square root of 444111218 is about 21073.9464268086. The cubic root of 444111218 is about 762.9520561547.

The spelling of 444111218 in words is "four hundred forty-four million, one hundred eleven thousand, two hundred eighteen".