199954 has 8 divisors (see below), whose sum is σ = 317628. Its totient is φ = 94080.

The previous prime is 199933. The next prime is 199961. The reversal of 199954 is 459991.

199954 is nontrivially palindromic in base 6.

It can be written as a sum of positive squares in 2 ways, for example, as 178929 + 21025 = 423^2 + 145^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

199954 is an undulating number in base 6.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2907 + ... + 2974.

2¹⁹⁹⁹⁵⁴ is an apocalyptic number.

199954 is a deficient number, since it is larger than the sum of its proper divisors (117674).

199954 is a wasteful number, since it uses less digits than its factorization.

199954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5900.

The product of its digits is 14580, while the sum is 37.

The square root of 199954 is about 447.1621629789. The cubic root of 199954 is about 58.4758709266.

Adding to 199954 its sum of digits (37), we get a palindrome (199991).

The spelling of 199954 in words is "one hundred ninety-nine thousand, nine hundred fifty-four".