199434 has 16 divisors (see below), whose sum is σ = 408672. Its totient is φ = 64848.

The previous prime is 199429. The next prime is 199447. The reversal of 199434 is 434991.

It is an unprimeable number.

199434 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 7 ways as a sum of consecutive naturals, for example, 129 + ... + 644.

It is an arithmetic number, because the mean of its divisors is an integer number (25542).

2¹⁹⁹⁴³⁴ is an apocalyptic number.

199434 is an abundant number, since it is smaller than the sum of its proper divisors (209238).

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

199434 is a wasteful number, since it uses less digits than its factorization.

199434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821.

The product of its digits is 3888, while the sum is 30.

The square root of 199434 is about 446.5803399166. The cubic root of 199434 is about 58.4251361739.

It can be divided in two parts, 19 and 9434, that added together give a triangular number (9453 = T₁₃₇).

The spelling of 199434 in words is "one hundred ninety-nine thousand, four hundred thirty-four".