199971330 has 32 divisors (see below), whose sum is σ = 516849984. Its totient is φ = 49223616.

The previous prime is 199971329. The next prime is 199971379. The reversal of 199971330 is 33179991.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 255984 + ... + 256763.

It is an arithmetic number, because the mean of its divisors is an integer number (16151562).

Almost surely, 2^199971330 is an apocalyptic number.

199971330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199971330 is an abundant number, since it is smaller than the sum of its proper divisors (316878654).

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

199971330 is a wasteful number, since it uses less digits than its factorization.

199971330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512770.

The product of its (nonzero) digits is 45927, while the sum is 42.

The square root of 199971330 is about 14141.1219498313. The cubic root of 199971330 is about 584.7756024444.

The spelling of 199971330 in words is "one hundred ninety-nine million, nine hundred seventy-one thousand, three hundred thirty".