199321794 has 24 divisors (see below), whose sum is σ = 493559040. Its totient is φ = 56949048.

The previous prime is 199321781. The next prime is 199321873. The reversal of 199321794 is 497123991.

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 11 ways as a sum of consecutive naturals, for example, 790834 + ... + 791085.

It is an arithmetic number, because the mean of its divisors is an integer number (20564960).

Almost surely, 2^199321794 is an apocalyptic number.

199321794 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

199321794 is an abundant number, since it is smaller than the sum of its proper divisors (294237246).

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

199321794 is a wasteful number, since it uses less digits than its factorization.

199321794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581934 (or 1581931 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 199321794 is about 14118.1370584082. The cubic root of 199321794 is about 584.1417702509.

The spelling of 199321794 in words is "one hundred ninety-nine million, three hundred twenty-one thousand, seven hundred ninety-four".