199999712 has 48 divisors (see below), whose sum is σ = 431609472. Its totient is φ = 90472320.

The previous prime is 199999703. The next prime is 199999721. The reversal of 199999712 is 217999991.

199999712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (199999703) and next prime (199999721).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78653 + ... + 81155.

It is an arithmetic number, because the mean of its divisors is an integer number (8991864).

Almost surely, 2^199999712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199999712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215804736).

199999712 is an abundant number, since it is smaller than the sum of its proper divisors (231609760).

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

199999712 is a wasteful number, since it uses less digits than its factorization.

199999712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751 (or 2743 counting only the distinct ones).

The product of its digits is 826686, while the sum is 56.

The square root of 199999712 is about 14142.1254413896. The cubic root of 199999712 is about 584.8032669367.

The spelling of 199999712 in words is "one hundred ninety-nine million, nine hundred ninety-nine thousand, seven hundred twelve".