199966159 has 8 divisors (see below), whose sum is σ = 201962448. Its totient is φ = 197977920.

The previous prime is 199966147. The next prime is 199966171. The reversal of 199966159 is 951669991.

It is an interprime number because it is at equal distance from previous prime (199966147) and next prime (199966171).

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 199966159 - 2⁷ = 199966031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199966859) 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, 55944 + ... + 59410.

It is an arithmetic number, because the mean of its divisors is an integer number (25245306).

Almost surely, 2^199966159 is an apocalyptic number.

199966159 is a deficient number, since it is larger than the sum of its proper divisors (1996289).

199966159 is a wasteful number, since it uses less digits than its factorization.

199966159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4025.

The product of its digits is 1180980, while the sum is 55.

The square root of 199966159 is about 14140.9391130858. The cubic root of 199966159 is about 584.7705618873.

The spelling of 199966159 in words is "one hundred ninety-nine million, nine hundred sixty-six thousand, one hundred fifty-nine".