444440661 has 16 divisors (see below), whose sum is σ = 706689024. Its totient is φ = 242923824.

The previous prime is 444440653. The next prime is 444440663. The reversal of 444440661 is 166044444.

It is not a de Polignac number, because 444440661 - 2³ = 444440653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444440663) 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, 459601 + ... + 460566.

It is an arithmetic number, because the mean of its divisors is an integer number (44168064).

Almost surely, 2^444440661 is an apocalyptic number.

It is an amenable number.

444440661 is a deficient number, since it is larger than the sum of its proper divisors (262248363).

444440661 is a wasteful number, since it uses less digits than its factorization.

444440661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920200.

The product of its (nonzero) digits is 36864, while the sum is 33.

The square root of 444440661 is about 21081.7613353344. The cubic root of 444440661 is about 763.1406628814.

The spelling of 444440661 in words is "four hundred forty-four million, four hundred forty thousand, six hundred sixty-one".