444363561 has 24 divisors (see below), whose sum is σ = 687272040. Its totient is φ = 275675136.

The previous prime is 444363553. The next prime is 444363581. The reversal of 444363561 is 165363444.

It can be written as a sum of positive squares in 4 ways, for example, as 93026025 + 351337536 = 9645^2 + 18744^2 .

It is not a de Polignac number, because 444363561 - 2³ = 444363553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (444363541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2700 + ... + 29933.

It is an arithmetic number, because the mean of its divisors is an integer number (28636335).

Almost surely, 2^444363561 is an apocalyptic number.

It is an amenable number.

444363561 is a deficient number, since it is larger than the sum of its proper divisors (242908479).

444363561 is a wasteful number, since it uses less digits than its factorization.

444363561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32745 (or 32742 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 444363561 is about 21079.9326611828. The cubic root of 444363561 is about 763.0965313449.

The spelling of 444363561 in words is "four hundred forty-four million, three hundred sixty-three thousand, five hundred sixty-one".