444316913 has 4 divisors (see below), whose sum is σ = 470453220. Its totient is φ = 418180608.

The previous prime is 444316889. The next prime is 444316931. The reversal of 444316913 is 319613444.

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 141800464 + 302516449 = 11908^2 + 17393^2 .

It is a cyclic number.

It is not a de Polignac number, because 444316913 - 2⁶ = 444316849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (444306913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13068128 + ... + 13068161.

It is an arithmetic number, because the mean of its divisors is an integer number (117613305).

Almost surely, 2^444316913 is an apocalyptic number.

It is an amenable number.

444316913 is a deficient number, since it is larger than the sum of its proper divisors (26136307).

444316913 is a wasteful number, since it uses less digits than its factorization.

444316913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26136306.

The product of its digits is 31104, while the sum is 35.

The square root of 444316913 is about 21078.8261769957. The cubic root of 444316913 is about 763.0698278556.

The spelling of 444316913 in words is "four hundred forty-four million, three hundred sixteen thousand, nine hundred thirteen".