199876393 has 2 divisors, whose sum is σ = 199876394. Its totient is φ = 199876392.

The previous prime is 199876387. The next prime is 199876421. The reversal of 199876393 is 393678991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159971904 + 39904489 = 12648^2 + 6317^2 .

It is a cyclic number.

It is not a de Polignac number, because 199876393 - 2¹⁷ = 199745321 is a prime.

It is not a weakly prime, because it can be changed into another prime (199876363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99938196 + 99938197.

It is an arithmetic number, because the mean of its divisors is an integer number (99938197).

Almost surely, 2^199876393 is an apocalyptic number.

It is an amenable number.

199876393 is a deficient number, since it is larger than the sum of its proper divisors (1).

199876393 is an equidigital number, since it uses as much as digits as its factorization.

199876393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2204496, while the sum is 55.

The square root of 199876393 is about 14137.7647808980. The cubic root of 199876393 is about 584.6830464610.

The spelling of 199876393 in words is "one hundred ninety-nine million, eight hundred seventy-six thousand, three hundred ninety-three".