208940370479 has 2 divisors, whose sum is σ = 208940370480. Its totient is φ = 208940370478.

The previous prime is 208940370437. The next prime is 208940370503. The reversal of 208940370479 is 974073049802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 208940370479 - 2¹⁶ = 208940304943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 208940370479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208940372479) 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, 104470185239 + 104470185240.

It is an arithmetic number, because the mean of its divisors is an integer number (104470185240).

Almost surely, 2^208940370479 is an apocalyptic number.

208940370479 is a deficient number, since it is larger than the sum of its proper divisors (1).

208940370479 is an equidigital number, since it uses as much as digits as its factorization.

208940370479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 208940370479 in words is "two hundred eight billion, nine hundred forty million, three hundred seventy thousand, four hundred seventy-nine".