199912914 has 16 divisors (see below), whose sum is σ = 444251040. Its totient is φ = 66637620.

The previous prime is 199912913. The next prime is 199912931. The reversal of 199912914 is 419219991.

It is a self number, because there is not a number n which added to its sum of digits gives 199912914.

It is not an unprimeable number, because it can be changed into a prime (199912913) 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 7 ways as a sum of consecutive naturals, for example, 1850992 + ... + 1851099.

It is an arithmetic number, because the mean of its divisors is an integer number (27765690).

Almost surely, 2^199912914 is an apocalyptic number.

199912914 is an abundant number, since it is smaller than the sum of its proper divisors (244338126).

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

199912914 is a wasteful number, since it uses less digits than its factorization.

199912914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3702102 (or 3702096 counting only the distinct ones).

The product of its digits is 52488, while the sum is 45.

The square root of 199912914 is about 14139.0563334333. The cubic root of 199912914 is about 584.7186549835.

The spelling of 199912914 in words is "one hundred ninety-nine million, nine hundred twelve thousand, nine hundred fourteen".