199290 has 64 divisors (see below), whose sum is σ = 596736. Its totient is φ = 41472.

The previous prime is 199289. The next prime is 199313. The reversal of 199290 is 92991.

199290 is nontrivially palindromic in base 9.

199290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

199290 is an esthetic number in base 3, because in such base its adjacent digits differ by 1.

It is a Harshad number since it is a multiple of its sum of digits (30).

199290 is an undulating number in base 3.

It is a Curzon number.

199290 is a nontrivial repdigit in base 9.

It is a plaindrome in base 9.

It is a nialpdrome in base 9.

It is a zygodrome in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2694 + ... + 2766.

It is an arithmetic number, because the mean of its divisors is an integer number (9324).

2¹⁹⁹²⁹⁰ is an apocalyptic number.

199290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 199290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298368).

199290 is an abundant number, since it is smaller than the sum of its proper divisors (397446).

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

199290 is a wasteful number, since it uses less digits than its factorization.

199290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103.

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 199290 is about 446.4190856135. The cubic root of 199290 is about 58.4110709605.

The spelling of 199290 in words is "one hundred ninety-nine thousand, two hundred ninety".