199958 has 16 divisors (see below), whose sum is σ = 334800. Its totient is φ = 88800.

The previous prime is 199933. The next prime is 199961. The reversal of 199958 is 859991.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 199958.

It is an unprimeable number.

199958 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1268 + ... + 1416.

It is an arithmetic number, because the mean of its divisors is an integer number (20925).

2¹⁹⁹⁹⁵⁸ is an apocalyptic number.

199958 is a deficient number, since it is larger than the sum of its proper divisors (134842).

199958 is a wasteful number, since it uses less digits than its factorization.

199958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223.

The product of its digits is 29160, while the sum is 41.

The square root of 199958 is about 447.1666356069. The cubic root of 199958 is about 58.4762608528.

The spelling of 199958 in words is "one hundred ninety-nine thousand, nine hundred fifty-eight".