199908051 has 8 divisors (see below), whose sum is σ = 304621824. Its totient is φ = 114233160.

The previous prime is 199908031. The next prime is 199908053. The reversal of 199908051 is 150809991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-199908051 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 199907994 and 199908012.

It is not an unprimeable number, because it can be changed into a prime (199908053) 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 in 7 ways as a sum of consecutive naturals, for example, 4759695 + ... + 4759736.

It is an arithmetic number, because the mean of its divisors is an integer number (38077728).

Almost surely, 2^199908051 is an apocalyptic number.

199908051 is a deficient number, since it is larger than the sum of its proper divisors (104713773).

199908051 is an equidigital number, since it uses as much as digits as its factorization.

199908051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9519441.

The product of its (nonzero) digits is 29160, while the sum is 42.

The square root of 199908051 is about 14138.8843619290. The cubic root of 199908051 is about 584.7139137359.

The spelling of 199908051 in words is "one hundred ninety-nine million, nine hundred eight thousand, fifty-one".