445644305 has 16 divisors (see below), whose sum is σ = 555670800. Its totient is φ = 342693120.

The previous prime is 445644289. The next prime is 445644319. The reversal of 445644305 is 503446544.

It can be written as a sum of positive squares in 8 ways, for example, as 92467456 + 353176849 = 9616^2 + 18793^2 .

It is not a de Polignac number, because 445644305 - 2⁴ = 445644289 is a prime.

It is a super-3 number, since 3×445644305³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 26495 + ... + 39915.

It is an arithmetic number, because the mean of its divisors is an integer number (34729425).

Almost surely, 2^445644305 is an apocalyptic number.

It is an amenable number.

445644305 is a deficient number, since it is larger than the sum of its proper divisors (110026495).

445644305 is a wasteful number, since it uses less digits than its factorization.

445644305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13684.

The product of its (nonzero) digits is 115200, while the sum is 35.

The square root of 445644305 is about 21110.2890790249. The cubic root of 445644305 is about 763.8289600256.

The spelling of 445644305 in words is "four hundred forty-five million, six hundred forty-four thousand, three hundred five".