4040002443 has 4 divisors (see below), whose sum is σ = 5386669928. Its totient is φ = 2693334960.

The previous prime is 4040002387. The next prime is 4040002459. The reversal of 4040002443 is 3442000404.

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

It is a de Polignac number, because none of the positive numbers 2^k-4040002443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4040002643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 673333738 + ... + 673333743.

It is an arithmetic number, because the mean of its divisors is an integer number (1346667482).

Almost surely, 2^4040002443 is an apocalyptic number.

4040002443 is a deficient number, since it is larger than the sum of its proper divisors (1346667485).

4040002443 is a wasteful number, since it uses less digits than its factorization.

4040002443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346667484.

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

The square root of 4040002443 is about 63561.0135460409. The cubic root of 4040002443 is about 1592.6751693895.

Adding to 4040002443 its reverse (3442000404), we get a palindrome (7482002847).

The spelling of 4040002443 in words is "four billion, forty million, two thousand, four hundred forty-three".