199390 has 16 divisors (see below), whose sum is σ = 364032. Its totient is φ = 78624.

The previous prime is 199379. The next prime is 199399. The reversal of 199390 is 93991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199399) 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, 1192 + ... + 1348.

It is an arithmetic number, because the mean of its divisors is an integer number (22752).

2¹⁹⁹³⁹⁰ is an apocalyptic number.

199390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199390 is a deficient number, since it is larger than the sum of its proper divisors (164642).

199390 is a wasteful number, since it uses less digits than its factorization.

199390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291.

The product of its (nonzero) digits is 2187, while the sum is 31.

The square root of 199390 is about 446.5310739467. The cubic root of 199390 is about 58.4208391883.

It can be divided in two parts, 19 and 9390, that added together give a square (9409 = 97²).

The spelling of 199390 in words is "one hundred ninety-nine thousand, three hundred ninety".