4043444401 has 4 divisors (see below), whose sum is σ = 4053049204. Its totient is φ = 4033839600.

The previous prime is 4043444399. The next prime is 4043444417. The reversal of 4043444401 is 1044443404.

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 976500001 + 3066944400 = 31249^2 + 55380^2 .

It is a cyclic number.

It is not a de Polignac number, because 4043444401 - 2¹ = 4043444399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4043444401.

It is not an unprimeable number, because it can be changed into a prime (4043424401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4801770 + ... + 4802611.

It is an arithmetic number, because the mean of its divisors is an integer number (1013262301).

Almost surely, 2^4043444401 is an apocalyptic number.

It is an amenable number.

4043444401 is a deficient number, since it is larger than the sum of its proper divisors (9604803).

4043444401 is an equidigital number, since it uses as much as digits as its factorization.

4043444401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9604802.

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 4043444401 is about 63588.0837972021. The cubic root of 4043444401 is about 1593.1273444435.

Adding to 4043444401 its reverse (1044443404), we get a palindrome (5087887805).

The spelling of 4043444401 in words is "four billion, forty-three million, four hundred forty-four thousand, four hundred one".