199934901 has 24 divisors (see below), whose sum is σ = 300291264. Its totient is φ = 128082240.

The previous prime is 199934899. The next prime is 199934927. The reversal of 199934901 is 109439991.

It is not a de Polignac number, because 199934901 - 2¹ = 199934899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199934981) 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 23 ways as a sum of consecutive naturals, for example, 20680 + ... + 28766.

It is an arithmetic number, because the mean of its divisors is an integer number (12512136).

Almost surely, 2^199934901 is an apocalyptic number.

It is an amenable number.

199934901 is a deficient number, since it is larger than the sum of its proper divisors (100356363).

199934901 is a wasteful number, since it uses less digits than its factorization.

199934901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8201 (or 8198 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 45.

The square root of 199934901 is about 14139.8338391934. The cubic root of 199934901 is about 584.7400905468.

The spelling of 199934901 in words is "one hundred ninety-nine million, nine hundred thirty-four thousand, nine hundred one".