199086617 has 8 divisors (see below), whose sum is σ = 210468960. Its totient is φ = 187794720.

The previous prime is 199086599. The next prime is 199086623. The reversal of 199086617 is 716680991.

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 199086617 - 2⁶ = 199086553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199086637) 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, 18059 + ... + 26912.

It is an arithmetic number, because the mean of its divisors is an integer number (26308620).

Almost surely, 2^199086617 is an apocalyptic number.

It is an amenable number.

199086617 is a deficient number, since it is larger than the sum of its proper divisors (11382343).

199086617 is a wasteful number, since it uses less digits than its factorization.

199086617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45223.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 199086617 is about 14109.8057038359. The cubic root of 199086617 is about 583.9119395980.

The spelling of 199086617 in words is "one hundred ninety-nine million, eighty-six thousand, six hundred seventeen".