443220013 has 8 divisors (see below), whose sum is σ = 447693048. Its totient is φ = 438756864.

The previous prime is 443220007. The next prime is 443220047. The reversal of 443220013 is 310022344.

It can be written as a sum of positive squares in 4 ways, for example, as 412164 + 442807849 = 642^2 + 21043^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 443220013 - 2⁵ = 443219981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (443220053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114831 + ... + 118627.

It is an arithmetic number, because the mean of its divisors is an integer number (55961631).

Almost surely, 2^443220013 is an apocalyptic number.

It is an amenable number.

443220013 is a deficient number, since it is larger than the sum of its proper divisors (4473035).

443220013 is a wasteful number, since it uses less digits than its factorization.

443220013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4943.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 443220013 is about 21052.7910976193. The cubic root of 443220013 is about 762.4413717531.

Adding to 443220013 its reverse (310022344), we get a palindrome (753242357).

The spelling of 443220013 in words is "four hundred forty-three million, two hundred twenty thousand, thirteen".