199996291 has 8 divisors (see below), whose sum is σ = 219322368. Its totient is φ = 180861000.

The previous prime is 199996289. The next prime is 199996297. The reversal of 199996291 is 192699991.

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

It is a cyclic number.

It is not a de Polignac number, because 199996291 - 2¹ = 199996289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199996297) 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, 45495 + ... + 49696.

It is an arithmetic number, because the mean of its divisors is an integer number (27415296).

Almost surely, 2^199996291 is an apocalyptic number.

199996291 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

199996291 is a deficient number, since it is larger than the sum of its proper divisors (19326077).

199996291 is a wasteful number, since it uses less digits than its factorization.

199996291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95393.

The product of its digits is 708588, while the sum is 55.

The square root of 199996291 is about 14142.0044901704. The cubic root of 199996291 is about 584.7999325596.

The spelling of 199996291 in words is "one hundred ninety-nine million, nine hundred ninety-six thousand, two hundred ninety-one".