445399438309 has 32 divisors (see below), whose sum is σ = 541477163520. Its totient is φ = 358203347712.

The previous prime is 445399438307. The next prime is 445399438313. The reversal of 445399438309 is 903834993544.

It is not a de Polignac number, because 445399438309 - 2¹ = 445399438307 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 (445399438307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6145527 + ... + 6217579.

It is an arithmetic number, because the mean of its divisors is an integer number (16921161360).

Almost surely, 2^445399438309 is an apocalyptic number.

It is an amenable number.

445399438309 is a deficient number, since it is larger than the sum of its proper divisors (96077725211).

445399438309 is a wasteful number, since it uses less digits than its factorization.

445399438309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72949.

The product of its (nonzero) digits is 50388480, while the sum is 61.

The spelling of 445399438309 in words is "four hundred forty-five billion, three hundred ninety-nine million, four hundred thirty-eight thousand, three hundred nine".