199948093 has 2 divisors, whose sum is σ = 199948094. Its totient is φ = 199948092.

The previous prime is 199948087. The next prime is 199948097. The reversal of 199948093 is 390849991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189943524 + 10004569 = 13782^2 + 3163^2 .

It is a cyclic number.

It is not a de Polignac number, because 199948093 - 2¹⁷ = 199817021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199948093.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199948097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99974046 + 99974047.

It is an arithmetic number, because the mean of its divisors is an integer number (99974047).

Almost surely, 2^199948093 is an apocalyptic number.

It is an amenable number.

199948093 is a deficient number, since it is larger than the sum of its proper divisors (1).

199948093 is an equidigital number, since it uses as much as digits as its factorization.

199948093 is an evil number, because the sum of its binary digits is even.

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

The square root of 199948093 is about 14140.3003150570. The cubic root of 199948093 is about 584.7529509355.

The spelling of 199948093 in words is "one hundred ninety-nine million, nine hundred forty-eight thousand, ninety-three".