199380793 has 2 divisors, whose sum is σ = 199380794. Its totient is φ = 199380792.

The previous prime is 199380791. The next prime is 199380817. The reversal of 199380793 is 397083991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99940009 + 99440784 = 9997^2 + 9972^2 .

It is a cyclic number.

It is not a de Polignac number, because 199380793 - 2¹ = 199380791 is a prime.

Together with 199380791, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (199380791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99690396 + 99690397.

It is an arithmetic number, because the mean of its divisors is an integer number (99690397).

Almost surely, 2^199380793 is an apocalyptic number.

It is an amenable number.

199380793 is a deficient number, since it is larger than the sum of its proper divisors (1).

199380793 is an equidigital number, since it uses as much as digits as its factorization.

199380793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 367416, while the sum is 49.

The square root of 199380793 is about 14120.2263792051. The cubic root of 199380793 is about 584.1993996413.

The spelling of 199380793 in words is "one hundred ninety-nine million, three hundred eighty thousand, seven hundred ninety-three".