199894834 has 8 divisors (see below), whose sum is σ = 300925548. Its totient is φ = 99586320.

The previous prime is 199894819. The next prime is 199894837. The reversal of 199894834 is 438498991.

It can be written as a sum of positive squares in 2 ways, for example, as 147549609 + 52345225 = 12147^2 + 7235^2 .

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

It is not an unprimeable number, because it can be changed into a prime (199894837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179857 + ... + 180964.

Almost surely, 2^199894834 is an apocalyptic number.

199894834 is a deficient number, since it is larger than the sum of its proper divisors (101030714).

199894834 is a wasteful number, since it uses less digits than its factorization.

199894834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361100.

The product of its digits is 2239488, while the sum is 55.

The square root of 199894834 is about 14138.4169552323. The cubic root of 199894834 is about 584.7010272546.

The spelling of 199894834 in words is "one hundred ninety-nine million, eight hundred ninety-four thousand, eight hundred thirty-four".