199478 has 8 divisors (see below), whose sum is σ = 316872. Its totient is φ = 93856.

The previous prime is 199457. The next prime is 199483. The reversal of 199478 is 874991.

199478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a nialpdrome in base 12.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 199478.

It is an unprimeable number.

199478 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2900 + ... + 2967.

It is an arithmetic number, because the mean of its divisors is an integer number (39609).

2¹⁹⁹⁴⁷⁸ is an apocalyptic number.

199478 is a deficient number, since it is larger than the sum of its proper divisors (117394).

199478 is a wasteful number, since it uses less digits than its factorization.

199478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5886.

The product of its digits is 18144, while the sum is 38.

The square root of 199478 is about 446.6296004521. The cubic root of 199478 is about 58.4294325275.

The spelling of 199478 in words is "one hundred ninety-nine thousand, four hundred seventy-eight".