199071 has 16 divisors (see below), whose sum is σ = 301920. Its totient is φ = 129600.

The previous prime is 199049. The next prime is 199081. The reversal of 199071 is 170991.

It is not a de Polignac number, because 199071 - 2⁵ = 199039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

199071 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1921 + ... + 2021.

It is an arithmetic number, because the mean of its divisors is an integer number (18870).

2¹⁹⁹⁰⁷¹ is an apocalyptic number.

199071 is a deficient number, since it is larger than the sum of its proper divisors (102849).

199071 is a wasteful number, since it uses less digits than its factorization.

199071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 567, while the sum is 27.

The square root of 199071 is about 446.1737329785. The cubic root of 199071 is about 58.3896671217.

The spelling of 199071 in words is "one hundred ninety-nine thousand, seventy-one".