199396709 has 4 divisors (see below), whose sum is σ = 199568160. Its totient is φ = 199225260.

The previous prime is 199396693. The next prime is 199396727. The reversal of 199396709 is 907693991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 199396709 - 2⁴ = 199396693 is a prime.

It is a super-3 number, since 3×199396709³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199396409) 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, 83969 + ... + 86310.

It is an arithmetic number, because the mean of its divisors is an integer number (49892040).

Almost surely, 2^199396709 is an apocalyptic number.

It is an amenable number.

199396709 is a deficient number, since it is larger than the sum of its proper divisors (171451).

199396709 is a wasteful number, since it uses less digits than its factorization.

199396709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171450.

The product of its (nonzero) digits is 826686, while the sum is 53.

The square root of 199396709 is about 14120.7899566561. The cubic root of 199396709 is about 584.2149442182.

The spelling of 199396709 in words is "one hundred ninety-nine million, three hundred ninety-six thousand, seven hundred nine".