199992823 has 2 divisors, whose sum is σ = 199992824. Its totient is φ = 199992822.

The previous prime is 199992817. The next prime is 199992829. The reversal of 199992823 is 328299991.

It is a balanced prime because it is at equal distance from previous prime (199992817) and next prime (199992829).

It is an emirp because it is prime and its reverse (328299991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199992823 - 2⁵ = 199992791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199992829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99996411 + 99996412.

It is an arithmetic number, because the mean of its divisors is an integer number (99996412).

Almost surely, 2^199992823 is an apocalyptic number.

199992823 is a deficient number, since it is larger than the sum of its proper divisors (1).

199992823 is an equidigital number, since it uses as much as digits as its factorization.

199992823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 629856, while the sum is 52.

The square root of 199992823 is about 14141.8818761861. The cubic root of 199992823 is about 584.7965523338.

It can be divided in two parts, 19999 and 2823, that added together give a palindrome (22822).

The spelling of 199992823 in words is "one hundred ninety-nine million, nine hundred ninety-two thousand, eight hundred twenty-three".