199738 has 16 divisors (see below), whose sum is σ = 373824. Its totient is φ = 77760.

The previous prime is 199729. The next prime is 199739. The reversal of 199738 is 837991.

199738 is nontrivially palindromic in base 6.

199738 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 199697 and 199706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199739) 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, 495 + ... + 802.

It is an arithmetic number, because the mean of its divisors is an integer number (23364).

2¹⁹⁹⁷³⁸ is an apocalyptic number.

199738 is a deficient number, since it is larger than the sum of its proper divisors (174086).

199738 is a wasteful number, since it uses less digits than its factorization.

199738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317.

The product of its digits is 13608, while the sum is 37.

The square root of 199738 is about 446.9205745991. The cubic root of 199738 is about 58.4548071837.

The spelling of 199738 in words is "one hundred ninety-nine thousand, seven hundred thirty-eight".