199991332 has 12 divisors (see below), whose sum is σ = 370572300. Its totient is φ = 94113536.

The previous prime is 199991303. The next prime is 199991339. The reversal of 199991332 is 233199991.

It can be written as a sum of positive squares in 2 ways, for example, as 160376896 + 39614436 = 12664^2 + 6294^2 .

It is not an unprimeable number, because it can be changed into a prime (199991339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1470457 + ... + 1470592.

It is an arithmetic number, because the mean of its divisors is an integer number (30881025).

Almost surely, 2^199991332 is an apocalyptic number.

It is an amenable number.

199991332 is a deficient number, since it is larger than the sum of its proper divisors (170580968).

199991332 is a wasteful number, since it uses less digits than its factorization.

199991332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2941070 (or 2941068 counting only the distinct ones).

The product of its digits is 118098, while the sum is 46.

The square root of 199991332 is about 14141.8291603314. The cubic root of 199991332 is about 584.7950990586.

The spelling of 199991332 in words is "one hundred ninety-nine million, nine hundred ninety-one thousand, three hundred thirty-two".