444360661 has 6 divisors (see below), whose sum is σ = 451812662. Its totient is φ = 436914120.

The previous prime is 444360613. The next prime is 444360673. The reversal of 444360661 is 166063444.

It can be written as a sum of positive squares in only one way, i.e., 262245636 + 182115025 = 16194^2 + 13495^2 .

It is not a de Polignac number, because 444360661 - 2⁹ = 444360149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444360061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 163290 + ... + 165988.

Almost surely, 2^444360661 is an apocalyptic number.

It is an amenable number.

444360661 is a deficient number, since it is larger than the sum of its proper divisors (7452001).

444360661 is an frugal number, since it uses more digits than its factorization.

444360661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5459 (or 2760 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 444360661 is about 21079.8638752721. The cubic root of 444360661 is about 763.0948713042.

The spelling of 444360661 in words is "four hundred forty-four million, three hundred sixty thousand, six hundred sixty-one".