199734793 has 4 divisors (see below), whose sum is σ = 203503428. Its totient is φ = 195966160.

The previous prime is 199734791. The next prime is 199734809. The reversal of 199734793 is 397437991.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 171400464 + 28334329 = 13092^2 + 5323^2 .

It is a cyclic number.

It is not a de Polignac number, because 199734793 - 2¹ = 199734791 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 199734793.

It is not an unprimeable number, because it can be changed into a prime (199734791) 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, 1884238 + ... + 1884343.

It is an arithmetic number, because the mean of its divisors is an integer number (50875857).

Almost surely, 2^199734793 is an apocalyptic number.

It is an amenable number.

199734793 is a deficient number, since it is larger than the sum of its proper divisors (3768635).

199734793 is an equidigital number, since it uses as much as digits as its factorization.

199734793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3768634.

The product of its digits is 1285956, while the sum is 52.

The square root of 199734793 is about 14132.7560298761. The cubic root of 199734793 is about 584.5449433120.

The spelling of 199734793 in words is "one hundred ninety-nine million, seven hundred thirty-four thousand, seven hundred ninety-three".