441440018 has 4 divisors (see below), whose sum is σ = 662160030. Its totient is φ = 220720008.

The previous prime is 441440017. The next prime is 441440033. The reversal of 441440018 is 810044144.

It is a happy number.

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., 439028209 + 2411809 = 20953^2 + 1553^2 .

It is not an unprimeable number, because it can be changed into a prime (441440011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110360003 + ... + 110360006.

Almost surely, 2^441440018 is an apocalyptic number.

441440018 is a deficient number, since it is larger than the sum of its proper divisors (220720012).

441440018 is a wasteful number, since it uses less digits than its factorization.

441440018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220720011.

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

The square root of 441440018 is about 21010.4740070280. The cubic root of 441440018 is about 761.4193340604.

The spelling of 441440018 in words is "four hundred forty-one million, four hundred forty thousand, eighteen".