40020440003987 has 2 divisors, whose sum is σ = 40020440003988. Its totient is φ = 40020440003986.

The previous prime is 40020440003917. The next prime is 40020440004029. The reversal of 40020440003987 is 78930004402004.

40020440003987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40020440003987 - 2²⁰ = 40020438955411 is a prime.

It is a super-2 number, since 2×40020440003987² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40020440003917) 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 as a sum of consecutive naturals, namely, 20010220001993 + 20010220001994.

It is an arithmetic number, because the mean of its divisors is an integer number (20010220001994).

Almost surely, 2^{40020440003987} is an apocalyptic number.

40020440003987 is a deficient number, since it is larger than the sum of its proper divisors (1).

40020440003987 is an equidigital number, since it uses as much as digits as its factorization.

40020440003987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 40020440003987 in words is "forty trillion, twenty billion, four hundred forty million, three thousand, nine hundred eighty-seven".