208879121 has 16 divisors (see below), whose sum is σ = 231822528. Its totient is φ = 186624000.

The previous prime is 208879117. The next prime is 208879127. The reversal of 208879121 is 121978802.

208879121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 208879121 - 2² = 208879117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208879127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173321 + ... + 174521.

It is an arithmetic number, because the mean of its divisors is an integer number (14488908).

Almost surely, 2^208879121 is an apocalyptic number.

It is an amenable number.

208879121 is a deficient number, since it is larger than the sum of its proper divisors (22943407).

208879121 is a wasteful number, since it uses less digits than its factorization.

208879121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 208879121 is about 14452.6510024978. The cubic root of 208879121 is about 593.3327815997.

The spelling of 208879121 in words is "two hundred eight million, eight hundred seventy-nine thousand, one hundred twenty-one".