445340305 has 4 divisors (see below), whose sum is σ = 534408372. Its totient is φ = 356272240.

The previous prime is 445340299. The next prime is 445340317. The reversal of 445340305 is 503043544.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 140209281 + 305131024 = 11841^2 + 17468^2 .

It is not a de Polignac number, because 445340305 - 2⁹ = 445339793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44534026 + ... + 44534035.

It is an arithmetic number, because the mean of its divisors is an integer number (133602093).

Almost surely, 2^445340305 is an apocalyptic number.

It is an amenable number.

445340305 is a deficient number, since it is larger than the sum of its proper divisors (89068067).

445340305 is an equidigital number, since it uses as much as digits as its factorization.

445340305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89068066.

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 445340305 is about 21103.0875703059. The cubic root of 445340305 is about 763.6552364070.

Adding to 445340305 its reverse (503043544), we get a palindrome (948383849).

The spelling of 445340305 in words is "four hundred forty-five million, three hundred forty thousand, three hundred five".