808840067429 has 2 divisors, whose sum is σ = 808840067430. Its totient is φ = 808840067428.

The previous prime is 808840067423. The next prime is 808840067501. The reversal of 808840067429 is 924760048808.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 800670619204 + 8169448225 = 894802^2 + 90385^2 .

It is a cyclic number.

It is not a de Polignac number, because 808840067429 - 2⁸ = 808840067173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (808840067423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404420033714 + 404420033715.

It is an arithmetic number, because the mean of its divisors is an integer number (404420033715).

Almost surely, 2^808840067429 is an apocalyptic number.

It is an amenable number.

808840067429 is a deficient number, since it is larger than the sum of its proper divisors (1).

808840067429 is an equidigital number, since it uses as much as digits as its factorization.

808840067429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6193152, while the sum is 56.

The spelling of 808840067429 in words is "eight hundred eight billion, eight hundred forty million, sixty-seven thousand, four hundred twenty-nine".