199996127 has 4 divisors (see below), whose sum is σ = 200259696. Its totient is φ = 199732560.

The previous prime is 199996117. The next prime is 199996141. The reversal of 199996127 is 721699991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 721699991 = 337 ⋅2141543.

It is a cyclic number.

It is not a de Polignac number, because 199996127 - 2¹⁴ = 199979743 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 (199996117) 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, 130643 + ... + 132164.

It is an arithmetic number, because the mean of its divisors is an integer number (50064924).

Almost surely, 2^199996127 is an apocalyptic number.

199996127 is a deficient number, since it is larger than the sum of its proper divisors (263569).

199996127 is an equidigital number, since it uses as much as digits as its factorization.

199996127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263568.

The product of its digits is 551124, while the sum is 53.

The square root of 199996127 is about 14141.9986918398. The cubic root of 199996127 is about 584.7997727113.

The spelling of 199996127 in words is "one hundred ninety-nine million, nine hundred ninety-six thousand, one hundred twenty-seven".