190398 has 16 divisors (see below), whose sum is σ = 410256. Its totient is φ = 58560.

The previous prime is 190391. The next prime is 190403. The reversal of 190398 is 893091.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190391) by changing a digit.

190398 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1143 + ... + 1298.

It is an arithmetic number, because the mean of its divisors is an integer number (25641).

2¹⁹⁰³⁹⁸ is an apocalyptic number.

190398 is an abundant number, since it is smaller than the sum of its proper divisors (219858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

190398 is a wasteful number, since it uses less digits than its factorization.

190398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2459.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 190398 is about 436.3461928332. The cubic root of 190398 is about 57.5290842152.

The spelling of 190398 in words is "one hundred ninety thousand, three hundred ninety-eight".