199988716 has 12 divisors (see below), whose sum is σ = 356584032. Its totient is φ = 98107568.

The previous prime is 199988681. The next prime is 199988717. The reversal of 199988716 is 617889991.

It is not an unprimeable number, because it can be changed into a prime (199988717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471460 + ... + 471883.

It is an arithmetic number, because the mean of its divisors is an integer number (29715336).

Almost surely, 2^199988716 is an apocalyptic number.

It is an amenable number.

199988716 is a deficient number, since it is larger than the sum of its proper divisors (156595316).

199988716 is a wasteful number, since it uses less digits than its factorization.

199988716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943400 (or 943398 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 58.

The square root of 199988716 is about 14141.7366684577. The cubic root of 199988716 is about 584.7925492303.

It can be divided in two parts, 199988 and 716, that added together give a square (200704 = 448²).

The spelling of 199988716 in words is "one hundred ninety-nine million, nine hundred eighty-eight thousand, seven hundred sixteen".