9908399443 has 2 divisors, whose sum is σ = 9908399444. Its totient is φ = 9908399442.

The previous prime is 9908399441. The next prime is 9908399461. The reversal of 9908399443 is 3449938099.

9908399443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (3449938099) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9908399443 - 2¹ = 9908399441 is a prime.

Together with 9908399441, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9908399441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4954199721 + 4954199722.

It is an arithmetic number, because the mean of its divisors is an integer number (4954199722).

Almost surely, 2^9908399443 is an apocalyptic number.

9908399443 is a deficient number, since it is larger than the sum of its proper divisors (1).

9908399443 is an equidigital number, since it uses as much as digits as its factorization.

9908399443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7558272, while the sum is 58.

The square root of 9908399443 is about 99540.9435508826. The cubic root of 9908399443 is about 2147.8362542309.

The spelling of 9908399443 in words is "nine billion, nine hundred eight million, three hundred ninety-nine thousand, four hundred forty-three".