249668093 has 2 divisors, whose sum is σ = 249668094. Its totient is φ = 249668092.

The previous prime is 249668087. The next prime is 249668143. The reversal of 249668093 is 390866942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210192004 + 39476089 = 14498^2 + 6283^2 .

It is a cyclic number.

It is not a de Polignac number, because 249668093 - 2¹⁰ = 249667069 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249668693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124834046 + 124834047.

It is an arithmetic number, because the mean of its divisors is an integer number (124834047).

Almost surely, 2^249668093 is an apocalyptic number.

It is an amenable number.

249668093 is a deficient number, since it is larger than the sum of its proper divisors (1).

249668093 is an equidigital number, since it uses as much as digits as its factorization.

249668093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 47.

The square root of 249668093 is about 15800.8889939775. Note that the first 3 decimals coincide. The cubic root of 249668093 is about 629.6816170718.

The spelling of 249668093 in words is "two hundred forty-nine million, six hundred sixty-eight thousand, ninety-three".