208949928398 has 16 divisors (see below), whose sum is σ = 317867937120. Its totient is φ = 102994214400.

The previous prime is 208949928389. The next prime is 208949928427. The reversal of 208949928398 is 893829949802.

208949928398 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (71).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1678118 + ... + 1798326.

It is an arithmetic number, because the mean of its divisors is an integer number (19866746070).

Almost surely, 2^208949928398 is an apocalyptic number.

208949928398 is a deficient number, since it is larger than the sum of its proper divisors (108918008722).

208949928398 is a wasteful number, since it uses less digits than its factorization.

208949928398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132523.

The product of its (nonzero) digits is 161243136, while the sum is 71.

The spelling of 208949928398 in words is "two hundred eight billion, nine hundred forty-nine million, nine hundred twenty-eight thousand, three hundred ninety-eight".