4004040043 has 2 divisors, whose sum is σ = 4004040044. Its totient is φ = 4004040042.

The previous prime is 4004040017. The next prime is 4004040049. The reversal of 4004040043 is 3400404004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4004040043 - 2¹³ = 4004031851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4004040043.

It is not a weakly prime, because it can be changed into another prime (4004040049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2002020021 + 2002020022.

It is an arithmetic number, because the mean of its divisors is an integer number (2002020022).

Almost surely, 2^4004040043 is an apocalyptic number.

4004040043 is a deficient number, since it is larger than the sum of its proper divisors (1).

4004040043 is an equidigital number, since it uses as much as digits as its factorization.

4004040043 is an odious number, because the sum of its binary digits is odd.

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

The square root of 4004040043 is about 63277.4844869800. The cubic root of 4004040043 is about 1587.9353028512.

Adding to 4004040043 its reverse (3400404004), we get a palindrome (7404444047).

The spelling of 4004040043 in words is "four billion, four million, forty thousand, forty-three".