4020040443 has 8 divisors (see below), whose sum is σ = 5365600768. Its totient is φ = 2677253544.

The previous prime is 4020040411. The next prime is 4020040469. The reversal of 4020040443 is 3440400204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4020040443 - 2⁵ = 4020040411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4020040543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 689971 + ... + 695772.

It is an arithmetic number, because the mean of its divisors is an integer number (670700096).

Almost surely, 2^4020040443 is an apocalyptic number.

4020040443 is a deficient number, since it is larger than the sum of its proper divisors (1345560325).

4020040443 is a wasteful number, since it uses less digits than its factorization.

4020040443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386713.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 4020040443 is about 63403.7888694359. The cubic root of 4020040443 is about 1590.0476553099.

Adding to 4020040443 its reverse (3440400204), we get a palindrome (7460440647).

The spelling of 4020040443 in words is "four billion, twenty million, forty thousand, four hundred forty-three".