444444441 has 16 divisors (see below), whose sum is σ = 685824000. Its totient is φ = 250752528.

The previous prime is 444444437. The next prime is 444444443. The reversal of 444444441 is 144444444.

It is a happy number.

It is not a de Polignac number, because 444444441 - 2² = 444444437 is a prime.

It is a super-2 number, since 2×444444441² = 395061722271604962, which contains 22 as substring.

It is a Curzon number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (444444443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132291 + ... + 135608.

It is an arithmetic number, because the mean of its divisors is an integer number (42864000).

Almost surely, 2^444444441 is an apocalyptic number.

It is an amenable number.

444444441 is a deficient number, since it is larger than the sum of its proper divisors (241379559).

444444441 is a wasteful number, since it uses less digits than its factorization.

444444441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267988.

The product of its digits is 65536, while the sum is 33.

The square root of 444444441 is about 21081.8509860970. The cubic root of 444444441 is about 763.1428263974.

Adding to 444444441 its reverse (144444444), we get a palindrome (588888885).

The spelling of 444444441 in words is "four hundred forty-four million, four hundred forty-four thousand, four hundred forty-one".