208916093 has 2 divisors, whose sum is σ = 208916094. Its totient is φ = 208916092.

The previous prime is 208916069. The next prime is 208916137. The reversal of 208916093 is 390619802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208600249 + 315844 = 14443^2 + 562^2 .

It is a cyclic number.

It is not a de Polignac number, because 208916093 - 2¹⁴ = 208899709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208916003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104458046 + 104458047.

It is an arithmetic number, because the mean of its divisors is an integer number (104458047).

Almost surely, 2^208916093 is an apocalyptic number.

It is an amenable number.

208916093 is a deficient number, since it is larger than the sum of its proper divisors (1).

208916093 is an equidigital number, since it uses as much as digits as its factorization.

208916093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 208916093 is about 14453.9300192024. The cubic root of 208916093 is about 593.3677865432.

The spelling of 208916093 in words is "two hundred eight million, nine hundred sixteen thousand, ninety-three".