445945585 has 4 divisors (see below), whose sum is σ = 535134708. Its totient is φ = 356756464.

The previous prime is 445945583. The next prime is 445945639. The reversal of 445945585 is 585549544.

It is a happy number.

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 50253921 + 395691664 = 7089^2 + 19892^2 .

It is a cyclic number.

It is not a de Polignac number, because 445945585 - 2¹ = 445945583 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445945583) 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, 44594554 + ... + 44594563.

It is an arithmetic number, because the mean of its divisors is an integer number (133783677).

Almost surely, 2^445945585 is an apocalyptic number.

It is an amenable number.

445945585 is a deficient number, since it is larger than the sum of its proper divisors (89189123).

445945585 is an equidigital number, since it uses as much as digits as its factorization.

445945585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89189122.

The product of its digits is 2880000, while the sum is 49.

The square root of 445945585 is about 21117.4237301807. The cubic root of 445945585 is about 764.0010513449.

The spelling of 445945585 in words is "four hundred forty-five million, nine hundred forty-five thousand, five hundred eighty-five".