444665827709 has 4 divisors (see below), whose sum is σ = 447328497504. Its totient is φ = 442003157916.

The previous prime is 444665827703. The next prime is 444665827717. The reversal of 444665827709 is 907728566444.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 444665827709 - 2⁸ = 444665827453 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 (444665827703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1331334647 + ... + 1331334980.

It is an arithmetic number, because the mean of its divisors is an integer number (111832124376).

Almost surely, 2^444665827709 is an apocalyptic number.

It is an amenable number.

444665827709 is a deficient number, since it is larger than the sum of its proper divisors (2662669795).

444665827709 is a wasteful number, since it uses less digits than its factorization.

444665827709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662669794.

The product of its (nonzero) digits is 81285120, while the sum is 62.

The spelling of 444665827709 in words is "four hundred forty-four billion, six hundred sixty-five million, eight hundred twenty-seven thousand, seven hundred nine".