208973964 has 12 divisors (see below), whose sum is σ = 487605944. Its totient is φ = 69657984.

The previous prime is 208973959. The next prime is 208973981. The reversal of 208973964 is 469379802.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8707237 + ... + 8707260.

Almost surely, 2^208973964 is an apocalyptic number.

It is an amenable number.

208973964 is an abundant number, since it is smaller than the sum of its proper divisors (278631980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

208973964 is a wasteful number, since it uses less digits than its factorization.

208973964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17414504 (or 17414502 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 208973964 is about 14455.9317928662. The cubic root of 208973964 is about 593.4225702867.

The spelling of 208973964 in words is "two hundred eight million, nine hundred seventy-three thousand, nine hundred sixty-four".