4400400443 has 4 divisors (see below), whose sum is σ = 4418659608. Its totient is φ = 4382141280.

The previous prime is 4400400439. The next prime is 4400400449. The reversal of 4400400443 is 3440040044.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4400400443 - 2² = 4400400439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4400400449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9129221 + ... + 9129702.

It is an arithmetic number, because the mean of its divisors is an integer number (1104664902).

Almost surely, 2^4400400443 is an apocalyptic number.

4400400443 is a deficient number, since it is larger than the sum of its proper divisors (18259165).

4400400443 is a wasteful number, since it uses less digits than its factorization.

4400400443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18259164.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 4400400443 is about 66335.5141911179. The cubic root of 4400400443 is about 1638.6922505217.

Adding to 4400400443 its reverse (3440040044), we get a palindrome (7840440487).

The spelling of 4400400443 in words is "four billion, four hundred million, four hundred thousand, four hundred forty-three".