199992893 has 2 divisors, whose sum is σ = 199992894. Its totient is φ = 199992892.

The previous prime is 199992887. The next prime is 199992907. The reversal of 199992893 is 398299991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104305369 + 95687524 = 10213^2 + 9782^2 .

It is a cyclic number.

It is not a de Polignac number, because 199992893 - 2⁶ = 199992829 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199992823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99996446 + 99996447.

It is an arithmetic number, because the mean of its divisors is an integer number (99996447).

Almost surely, 2^199992893 is an apocalyptic number.

It is an amenable number.

199992893 is a deficient number, since it is larger than the sum of its proper divisors (1).

199992893 is an equidigital number, since it uses as much as digits as its factorization.

199992893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2834352, while the sum is 59.

The square root of 199992893 is about 14141.8843511040. The cubic root of 199992893 is about 584.7966205625.

The spelling of 199992893 in words is "one hundred ninety-nine million, nine hundred ninety-two thousand, eight hundred ninety-three".