445393013 has 16 divisors (see below), whose sum is σ = 521604720. Its totient is φ = 376482816.

The previous prime is 445393007. The next prime is 445393021. The reversal of 445393013 is 310393544.

It can be written as a sum of positive squares in 8 ways, for example, as 39853969 + 405539044 = 6313^2 + 20138^2 .

It is not a de Polignac number, because 445393013 - 2¹² = 445388917 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445393063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19058 + ... + 35411.

It is an arithmetic number, because the mean of its divisors is an integer number (32600295).

Almost surely, 2^445393013 is an apocalyptic number.

It is an amenable number.

445393013 is a deficient number, since it is larger than the sum of its proper divisors (76211707).

445393013 is a wasteful number, since it uses less digits than its factorization.

445393013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54536.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 445393013 is about 21104.3363553560. The cubic root of 445393013 is about 763.6853625464.

The spelling of 445393013 in words is "four hundred forty-five million, three hundred ninety-three thousand, thirteen".