199454105 has 16 divisors (see below), whose sum is σ = 244555200. Its totient is φ = 156107328.

The previous prime is 199454071. The next prime is 199454107. The reversal of 199454105 is 501454991.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199454105 is a prime.

It is not an unprimeable number, because it can be changed into a prime (199454107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116546 + ... + 118244.

It is an arithmetic number, because the mean of its divisors is an integer number (15284700).

Almost surely, 2^199454105 is an apocalyptic number.

It is an amenable number.

199454105 is a deficient number, since it is larger than the sum of its proper divisors (45101095).

199454105 is a wasteful number, since it uses less digits than its factorization.

199454105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200.

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 199454105 is about 14122.8221329874. The cubic root of 199454105 is about 584.2709939299.

The spelling of 199454105 in words is "one hundred ninety-nine million, four hundred fifty-four thousand, one hundred five".