199726313 has 8 divisors (see below), whose sum is σ = 204265800. Its totient is φ = 195215488.

The previous prime is 199726301. The next prime is 199726339. The reversal of 199726313 is 313627991.

It can be written as a sum of positive squares in 4 ways, for example, as 29997529 + 169728784 = 5477^2 + 13028^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 199726313 - 2⁴ = 199726297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199726343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7253 + ... + 21261.

It is an arithmetic number, because the mean of its divisors is an integer number (25533225).

Almost surely, 2^199726313 is an apocalyptic number.

It is an amenable number.

199726313 is a deficient number, since it is larger than the sum of its proper divisors (4539487).

199726313 is a wasteful number, since it uses less digits than its factorization.

199726313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14331.

The product of its digits is 61236, while the sum is 41.

The square root of 199726313 is about 14132.4560144371. The cubic root of 199726313 is about 584.5366706567.

The spelling of 199726313 in words is "one hundred ninety-nine million, seven hundred twenty-six thousand, three hundred thirteen".