194229999 has 6 divisors (see below), whose sum is σ = 280554456. Its totient is φ = 129486660.

The previous prime is 194229967. The next prime is 194230007. The reversal of 194229999 is 999922491.

It is not a de Polignac number, because 194229999 - 2⁵ = 194229967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194224999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10790547 + ... + 10790564.

It is an arithmetic number, because the mean of its divisors is an integer number (46759076).

Almost surely, 2^194229999 is an apocalyptic number.

194229999 is a deficient number, since it is larger than the sum of its proper divisors (86324457).

194229999 is a wasteful number, since it uses less digits than its factorization.

194229999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21581117 (or 21581114 counting only the distinct ones).

The product of its digits is 944784, while the sum is 54.

The square root of 194229999 is about 13936.6423144171. The cubic root of 194229999 is about 579.1247192112.

The spelling of 194229999 in words is "one hundred ninety-four million, two hundred twenty-nine thousand, nine hundred ninety-nine".