208839229 has 2 divisors, whose sum is σ = 208839230. Its totient is φ = 208839228.

The previous prime is 208839227. The next prime is 208839247. The reversal of 208839229 is 922938802.

208839229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171348100 + 37491129 = 13090^2 + 6123^2 .

It is a cyclic number.

It is not a de Polignac number, because 208839229 - 2¹ = 208839227 is a prime.

It is a super-2 number, since 2×208839229² = 87227647138628882, which contains 22 as substring.

Together with 208839227, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208839223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104419614 + 104419615.

It is an arithmetic number, because the mean of its divisors is an integer number (104419615).

Almost surely, 2^208839229 is an apocalyptic number.

It is an amenable number.

208839229 is a deficient number, since it is larger than the sum of its proper divisors (1).

208839229 is an equidigital number, since it uses as much as digits as its factorization.

208839229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 208839229 is about 14451.2708437701. The cubic root of 208839229 is about 593.2950073787.

The spelling of 208839229 in words is "two hundred eight million, eight hundred thirty-nine thousand, two hundred twenty-nine".