208383893 has 2 divisors, whose sum is σ = 208383894. Its totient is φ = 208383892.

The previous prime is 208383883. The next prime is 208383913. The reversal of 208383893 is 398383802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207417604 + 966289 = 14402^2 + 983^2 .

It is a cyclic number.

It is not a de Polignac number, because 208383893 - 2²² = 204189589 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 (208383803) 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, 104191946 + 104191947.

It is an arithmetic number, because the mean of its divisors is an integer number (104191947).

Almost surely, 2^208383893 is an apocalyptic number.

It is an amenable number.

208383893 is a deficient number, since it is larger than the sum of its proper divisors (1).

208383893 is an equidigital number, since it uses as much as digits as its factorization.

208383893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 208383893 is about 14435.5080617206. The cubic root of 208383893 is about 592.8635029601.

The spelling of 208383893 in words is "two hundred eight million, three hundred eighty-three thousand, eight hundred ninety-three".