8440088040809 has 2 divisors, whose sum is σ = 8440088040810. Its totient is φ = 8440088040808.

The previous prime is 8440088040739. The next prime is 8440088040877. The reversal of 8440088040809 is 9080408800448.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8410348003600 + 29740037209 = 2900060^2 + 172453^2 .

It is a cyclic number.

It is not a de Polignac number, because 8440088040809 - 2²⁸ = 8439819605353 is a prime.

It is a super-2 number, since 2×8440088040809² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8440088040889) 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, 4220044020404 + 4220044020405.

It is an arithmetic number, because the mean of its divisors is an integer number (4220044020405).

Almost surely, 2^{8440088040809} is an apocalyptic number.

It is an amenable number.

8440088040809 is a deficient number, since it is larger than the sum of its proper divisors (1).

8440088040809 is an equidigital number, since it uses as much as digits as its factorization.

8440088040809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2359296, while the sum is 53.

The spelling of 8440088040809 in words is "eight trillion, four hundred forty billion, eighty-eight million, forty thousand, eight hundred nine".