444326661 has 16 divisors (see below), whose sum is σ = 680961600. Its totient is φ = 286002864.

The previous prime is 444326657. The next prime is 444326669. The reversal of 444326661 is 166623444.

It is not a de Polignac number, because 444326661 - 2² = 444326657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444326669) 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, 282951 + ... + 284516.

It is an arithmetic number, because the mean of its divisors is an integer number (42560100).

Almost surely, 2^444326661 is an apocalyptic number.

It is an amenable number.

444326661 is a deficient number, since it is larger than the sum of its proper divisors (236634939).

444326661 is a wasteful number, since it uses less digits than its factorization.

444326661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567505 (or 567499 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 444326661 is about 21079.0574030245. The cubic root of 444326661 is about 763.0754082196.

The spelling of 444326661 in words is "four hundred forty-four million, three hundred twenty-six thousand, six hundred sixty-one".