199427663 has 8 divisors (see below), whose sum is σ = 212559840. Its totient is φ = 186451200.

The previous prime is 199427647. The next prime is 199427671. The reversal of 199427663 is 366724991.

It is a happy number.

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 199427663 - 2⁴ = 199427647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199427623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36278 + ... + 41411.

It is an arithmetic number, because the mean of its divisors is an integer number (26569980).

Almost surely, 2^199427663 is an apocalyptic number.

199427663 is a deficient number, since it is larger than the sum of its proper divisors (13132177).

199427663 is a wasteful number, since it uses less digits than its factorization.

199427663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77857.

The product of its digits is 489888, while the sum is 47.

The square root of 199427663 is about 14121.8859576191. The cubic root of 199427663 is about 584.2451734930.

The spelling of 199427663 in words is "one hundred ninety-nine million, four hundred twenty-seven thousand, six hundred sixty-three".