199430912 has 36 divisors (see below), whose sum is σ = 411825120. Its totient is φ = 96273408.

The previous prime is 199430879. The next prime is 199430939. The reversal of 199430912 is 219034991.

It is a super-2 number, since 2×199430912² = 79545377322303488, which contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6008 + ... + 20855.

Almost surely, 2^199430912 is an apocalyptic number.

It is an amenable number.

199430912 is an abundant number, since it is smaller than the sum of its proper divisors (212394208).

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

199430912 is an equidigital number, since it uses as much as digits as its factorization.

199430912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26908 (or 26894 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 199430912 is about 14122.0009913610. Note that the first 3 decimals coincide. The cubic root of 199430912 is about 584.2483462428.

The spelling of 199430912 in words is "one hundred ninety-nine million, four hundred thirty thousand, nine hundred twelve".