199444 has 24 divisors (see below), whose sum is σ = 423360. Its totient is φ = 80256.

The previous prime is 199429. The next prime is 199447. The reversal of 199444 is 444991.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267 + ... + 685.

It is an arithmetic number, because the mean of its divisors is an integer number (17640).

2¹⁹⁹⁴⁴⁴ is an apocalyptic number.

199444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211680).

199444 is an abundant number, since it is smaller than the sum of its proper divisors (223916).

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

199444 is a wasteful number, since it uses less digits than its factorization.

199444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447 (or 445 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 199444 is about 446.5915359700. The cubic root of 199444 is about 58.4261126734.

The spelling of 199444 in words is "one hundred ninety-nine thousand, four hundred forty-four".