447803961709 has 32 divisors (see below), whose sum is σ = 509569250400. Its totient is φ = 390590054400.

The previous prime is 447803961677. The next prime is 447803961719. The reversal of 447803961709 is 907169308744.

It can be written as a sum of positive squares in 16 ways, for example, as 4827192484 + 442976769225 = 69478^2 + 665565^2 .

It is not a de Polignac number, because 447803961709 - 2⁵ = 447803961677 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 (447803961719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7984437 + ... + 8040325.

It is an arithmetic number, because the mean of its divisors is an integer number (15924039075).

Almost surely, 2^447803961709 is an apocalyptic number.

It is an amenable number.

447803961709 is a deficient number, since it is larger than the sum of its proper divisors (61765288691).

447803961709 is a wasteful number, since it uses less digits than its factorization.

447803961709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56385.

The product of its (nonzero) digits is 9144576, while the sum is 58.

The spelling of 447803961709 in words is "four hundred forty-seven billion, eight hundred three million, nine hundred sixty-one thousand, seven hundred nine".