199801 has 16 divisors (see below), whose sum is σ = 255744. Its totient is φ = 152064.

The previous prime is 199799. The next prime is 199807. The reversal of 199801 is 108991.

199801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 199801 - 2¹ = 199799 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 199801.

It is not an unprimeable number, because it can be changed into a prime (199807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2701 + ... + 2773.

It is an arithmetic number, because the mean of its divisors is an integer number (15984).

2¹⁹⁹⁸⁰¹ is an apocalyptic number.

It is an amenable number.

199801 is a deficient number, since it is larger than the sum of its proper divisors (55943).

199801 is a wasteful number, since it uses less digits than its factorization.

199801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 199801 is about 446.9910513646. The cubic root of 199801 is about 58.4609523434.

It can be divided in two parts, 199 and 801, that added together give a cube (1000 = 10³).

The spelling of 199801 in words is "one hundred ninety-nine thousand, eight hundred one".