208444039 has 2 divisors, whose sum is σ = 208444040. Its totient is φ = 208444038.

The previous prime is 208444037. The next prime is 208444043. The reversal of 208444039 is 930444802.

208444039 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 is a cyclic number.

It is not a de Polignac number, because 208444039 - 2¹ = 208444037 is a prime.

Together with 208444037, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 208443995 and 208444013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208444037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104222019 + 104222020.

It is an arithmetic number, because the mean of its divisors is an integer number (104222020).

Almost surely, 2^208444039 is an apocalyptic number.

208444039 is a deficient number, since it is larger than the sum of its proper divisors (1).

208444039 is an equidigital number, since it uses as much as digits as its factorization.

208444039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 208444039 is about 14437.5911772013. The cubic root of 208444039 is about 592.9205370196.

The spelling of 208444039 in words is "two hundred eight million, four hundred forty-four thousand, thirty-nine".