199919312 has 20 divisors (see below), whose sum is σ = 404185440. Its totient is φ = 95613408.

The previous prime is 199919309. The next prime is 199919323. The reversal of 199919312 is 213919991.

199919312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271262 + ... + 271997.

It is an arithmetic number, because the mean of its divisors is an integer number (20209272).

Almost surely, 2^199919312 is an apocalyptic number.

It is an amenable number.

199919312 is an abundant number, since it is smaller than the sum of its proper divisors (204266128).

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

199919312 is a wasteful number, since it uses less digits than its factorization.

199919312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543290 (or 543284 counting only the distinct ones).

The product of its digits is 39366, while the sum is 44.

The square root of 199919312 is about 14139.2825843464. The cubic root of 199919312 is about 584.7248926830.

The spelling of 199919312 in words is "one hundred ninety-nine million, nine hundred nineteen thousand, three hundred twelve".