4440021213 has 16 divisors (see below), whose sum is σ = 6333771200. Its totient is φ = 2758250880.

The previous prime is 4440021211. The next prime is 4440021227. The reversal of 4440021213 is 3121200444.

It is not a de Polignac number, because 4440021213 - 2¹ = 4440021211 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4440021213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4440021211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 635008 + ... + 641961.

It is an arithmetic number, because the mean of its divisors is an integer number (395860700).

Almost surely, 2^4440021213 is an apocalyptic number.

It is an amenable number.

4440021213 is a deficient number, since it is larger than the sum of its proper divisors (1893749987).

4440021213 is a wasteful number, since it uses less digits than its factorization.

4440021213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277052.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 4440021213 is about 66633.4841727491. The cubic root of 4440021213 is about 1643.5957705044.

Adding to 4440021213 its reverse (3121200444), we get a palindrome (7561221657).

The spelling of 4440021213 in words is "four billion, four hundred forty million, twenty-one thousand, two hundred thirteen".