3940005888047 has 2 divisors, whose sum is σ = 3940005888048. Its totient is φ = 3940005888046.

The previous prime is 3940005887989. The next prime is 3940005888103. The reversal of 3940005888047 is 7408885000493.

3940005888047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (3940005888103) can be obtained adding 3940005888047 to its sum of digits (56).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3940005888047 - 2¹² = 3940005883951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3940005887983 and 3940005888001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3940005884047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1970002944023 + 1970002944024.

It is an arithmetic number, because the mean of its divisors is an integer number (1970002944024).

Almost surely, 2^{3940005888047} is an apocalyptic number.

3940005888047 is a deficient number, since it is larger than the sum of its proper divisors (1).

3940005888047 is an equidigital number, since it uses as much as digits as its factorization.

3940005888047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7741440, while the sum is 56.

The spelling of 3940005888047 in words is "three trillion, nine hundred forty billion, five million, eight hundred eighty-eight thousand, forty-seven".