208907147 has 8 divisors (see below), whose sum is σ = 221222400. Its totient is φ = 196723944.

The previous prime is 208907117. The next prime is 208907191. The reversal of 208907147 is 741709802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 208907147 - 2¹⁰ = 208906123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 208907147.

It is not an unprimeable number, because it can be changed into a prime (208907117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29747 + ... + 36092.

It is an arithmetic number, because the mean of its divisors is an integer number (27652800).

Almost surely, 2^208907147 is an apocalyptic number.

208907147 is a deficient number, since it is larger than the sum of its proper divisors (12315253).

208907147 is a wasteful number, since it uses less digits than its factorization.

208907147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66025.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 208907147 is about 14453.6205498830. The cubic root of 208907147 is about 593.3593168845.

The spelling of 208907147 in words is "two hundred eight million, nine hundred seven thousand, one hundred forty-seven".