199906954459 has 2 divisors, whose sum is σ = 199906954460. Its totient is φ = 199906954458.

The previous prime is 199906954451. The next prime is 199906954561. The reversal of 199906954459 is 954459609991.

199906954459 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 (954459609991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199906954459 - 2³ = 199906954451 is a prime.

It is not a weakly prime, because it can be changed into another prime (199906954451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99953477229 + 99953477230.

It is an arithmetic number, because the mean of its divisors is an integer number (99953477230).

Almost surely, 2^199906954459 is an apocalyptic number.

199906954459 is a deficient number, since it is larger than the sum of its proper divisors (1).

199906954459 is an equidigital number, since it uses as much as digits as its factorization.

199906954459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141717600, while the sum is 70.

The spelling of 199906954459 in words is "one hundred ninety-nine billion, nine hundred six million, nine hundred fifty-four thousand, four hundred fifty-nine".