199995893 has 4 divisors (see below), whose sum is σ = 200032800. Its totient is φ = 199958988.

The previous prime is 199995889. The next prime is 199995923. The reversal of 199995893 is 398599991.

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, and also an emirpimes, since its reverse is a distinct semiprime: 398599991 = 41 ⋅9721951.

It is a cyclic number.

It is not a de Polignac number, because 199995893 - 2² = 199995889 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199995883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8555 + ... + 21752.

It is an arithmetic number, because the mean of its divisors is an integer number (50008200).

Almost surely, 2^199995893 is an apocalyptic number.

It is an amenable number.

199995893 is a deficient number, since it is larger than the sum of its proper divisors (36907).

199995893 is an equidigital number, since it uses as much as digits as its factorization.

199995893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36906.

The product of its digits is 7085880, while the sum is 62.

The square root of 199995893 is about 14141.9904186080. The cubic root of 199995893 is about 584.7995446349.

The spelling of 199995893 in words is "one hundred ninety-nine million, nine hundred ninety-five thousand, eight hundred ninety-three".