199089017 has 4 divisors (see below), whose sum is σ = 199397376. Its totient is φ = 198780660.

The previous prime is 199089013. The next prime is 199089043. The reversal of 199089017 is 710980991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 199089017 - 2² = 199089013 is a prime.

It is a super-4 number, since 4×199089017⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199089013) 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, 153209 + ... + 154502.

It is an arithmetic number, because the mean of its divisors is an integer number (49849344).

Almost surely, 2^199089017 is an apocalyptic number.

It is an amenable number.

199089017 is a deficient number, since it is larger than the sum of its proper divisors (308359).

199089017 is an equidigital number, since it uses as much as digits as its factorization.

199089017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308358.

The product of its (nonzero) digits is 40824, while the sum is 44.

The square root of 199089017 is about 14109.8907508173. The cubic root of 199089017 is about 583.9142859519.

The spelling of 199089017 in words is "one hundred ninety-nine million, eighty-nine thousand, seventeen".