2043444401 has 4 divisors (see below), whose sum is σ = 2043581952. Its totient is φ = 2043306852.

The previous prime is 2043444383. The next prime is 2043444413. The reversal of 2043444401 is 1044443402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2043444401 - 2²² = 2039250097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2043444301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43361 + ... + 77246.

It is an arithmetic number, because the mean of its divisors is an integer number (510895488).

Almost surely, 2^2043444401 is an apocalyptic number.

It is an amenable number.

2043444401 is a deficient number, since it is larger than the sum of its proper divisors (137551).

2043444401 is a wasteful number, since it uses less digits than its factorization.

2043444401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137550.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 2043444401 is about 45204.4732410411. The cubic root of 2043444401 is about 1268.9785328146.

Adding to 2043444401 its reverse (1044443402), we get a palindrome (3087887803).

Subtracting from 2043444401 its reverse (1044443402), we obtain a palindrome (999000999).

The spelling of 2043444401 in words is "two billion, forty-three million, four hundred forty-four thousand, four hundred one".