4400040043 has 4 divisors (see below), whose sum is σ = 5028617200. Its totient is φ = 3771462888.

The previous prime is 4400040041. The next prime is 4400040067. The reversal of 4400040043 is 3400400044.

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 4400040043 - 2¹ = 4400040041 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 4400040043.

It is not an unprimeable number, because it can be changed into a prime (4400040041) 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, 314288568 + ... + 314288581.

It is an arithmetic number, because the mean of its divisors is an integer number (1257154300).

Almost surely, 2^4400040043 is an apocalyptic number.

4400040043 is a deficient number, since it is larger than the sum of its proper divisors (628577157).

4400040043 is an equidigital number, since it uses as much as digits as its factorization.

4400040043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628577156.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 4400040043 is about 66332.7976418905. The cubic root of 4400040043 is about 1638.6475121077.

Adding to 4400040043 its reverse (3400400044), we get a palindrome (7800440087).

The spelling of 4400040043 in words is "four billion, four hundred million, forty thousand, forty-three".