444580899361 has 3 divisors (see below), whose sum is σ = 444581566131. Its totient is φ = 444580232592.

The previous prime is 444580899349. The next prime is 444580899401. The reversal of 444580899361 is 163998085444.

It is a happy number.

The square root of 444580899361 is 666769.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 107112852961 + 337468046400 = 327281^2 + 580920^2 .

It is not a de Polignac number, because 444580899361 - 2¹³ = 444580891169 is a prime.

It is a super-2 number, since 2×444580899361² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 444580899361.

It is not an unprimeable number, because it can be changed into a prime (444580894361) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 333385 + ... + 1000153.

It is an arithmetic number, because the mean of its divisors is an integer number (148193855377).

Almost surely, 2^444580899361 is an apocalyptic number.

444580899361 is the 666769-th square number.

444580899361 is the 333385-th centered octagonal number.

It is an amenable number.

444580899361 is a deficient number, since it is larger than the sum of its proper divisors (666770).

444580899361 is an frugal number, since it uses more digits than its factorization.

444580899361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333538 (or 666769 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 61.

The spelling of 444580899361 in words is "four hundred forty-four billion, five hundred eighty million, eight hundred ninety-nine thousand, three hundred sixty-one".