199333990 has 8 divisors (see below), whose sum is σ = 358801200. Its totient is φ = 79733592.

The previous prime is 199333987. The next prime is 199334011. The reversal of 199333990 is 99333991.

199333990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 199333990.

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, 9966690 + ... + 9966709.

It is an arithmetic number, because the mean of its divisors is an integer number (44850150).

Almost surely, 2^199333990 is an apocalyptic number.

199333990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199333990 is a deficient number, since it is larger than the sum of its proper divisors (159467210).

199333990 is a wasteful number, since it uses less digits than its factorization.

199333990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19933406.

The product of its (nonzero) digits is 177147, while the sum is 46.

The square root of 199333990 is about 14118.5689784765. The cubic root of 199333990 is about 584.1536840639.

Subtracting from 199333990 its reverse (99333991), we obtain a palindrome (99999999).

The spelling of 199333990 in words is "one hundred ninety-nine million, three hundred thirty-three thousand, nine hundred ninety".