208006849 has 4 divisors (see below), whose sum is σ = 220242564. Its totient is φ = 195771136.

The previous prime is 208006837. The next prime is 208006873. The reversal of 208006849 is 948600802.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 184416400 + 23590449 = 13580^2 + 4857^2 .

It is a cyclic number.

It is not a de Polignac number, because 208006849 - 2¹³ = 207998657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208036849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6117832 + ... + 6117865.

It is an arithmetic number, because the mean of its divisors is an integer number (55060641).

Almost surely, 2^208006849 is an apocalyptic number.

It is an amenable number.

208006849 is a deficient number, since it is larger than the sum of its proper divisors (12235715).

208006849 is a wasteful number, since it uses less digits than its factorization.

208006849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12235714.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 208006849 is about 14422.4425462541. The cubic root of 208006849 is about 592.5057168587.

The spelling of 208006849 in words is "two hundred eight million, six thousand, eight hundred forty-nine".