444647132289 has 10 divisors (see below), whose sum is σ = 664225963170. Its totient is φ = 296431421472.

The previous prime is 444647132261. The next prime is 444647132291. The reversal of 444647132289 is 982231746444.

444647132289 is a `hidden beast` number, since 4 + 4 + 464 + 71 + 32 + 2 + 89 = 666.

It can be written as a sum of positive squares in only one way, i.e., 322152732225 + 122494400064 = 567585^2 + 349992^2 .

It is not a de Polignac number, because 444647132289 - 2⁹ = 444647131777 is a prime.

It is a super-2 number, since 2×444647132289² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (444647132789) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2744735304 + ... + 2744735465.

It is an arithmetic number, because the mean of its divisors is an integer number (66422596317).

Almost surely, 2^444647132289 is an apocalyptic number.

It is an amenable number.

444647132289 is a deficient number, since it is larger than the sum of its proper divisors (219578830881).

444647132289 is an equidigital number, since it uses as much as digits as its factorization.

444647132289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5489470781 (or 5489470772 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 54.

The spelling of 444647132289 in words is "four hundred forty-four billion, six hundred forty-seven million, one hundred thirty-two thousand, two hundred eighty-nine".