199951107 has 8 divisors (see below), whose sum is σ = 270972240. Its totient is φ = 131115360.

The previous prime is 199951069. The next prime is 199951211. The reversal of 199951107 is 701159991.

It is a happy number.

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

It is not a de Polignac number, because 199951107 - 2¹⁰ = 199950083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (199951907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 546132 + ... + 546497.

It is an arithmetic number, because the mean of its divisors is an integer number (33871530).

Almost surely, 2^199951107 is an apocalyptic number.

199951107 is a deficient number, since it is larger than the sum of its proper divisors (71021133).

199951107 is a wasteful number, since it uses less digits than its factorization.

199951107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092693.

The product of its (nonzero) digits is 25515, while the sum is 42.

The square root of 199951107 is about 14140.4068894781. The cubic root of 199951107 is about 584.7558890923.

The spelling of 199951107 in words is "one hundred ninety-nine million, nine hundred fifty-one thousand, one hundred seven".