208988589 has 4 divisors (see below), whose sum is σ = 278651456. Its totient is φ = 139325724.

The previous prime is 208988551. The next prime is 208988597. The reversal of 208988589 is 985889802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 208988589 - 2⁸ = 208988333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208988539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34831429 + ... + 34831434.

It is an arithmetic number, because the mean of its divisors is an integer number (69662864).

Almost surely, 2^208988589 is an apocalyptic number.

It is an amenable number.

208988589 is a deficient number, since it is larger than the sum of its proper divisors (69662867).

208988589 is an equidigital number, since it uses as much as digits as its factorization.

208988589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69662866.

The product of its (nonzero) digits is 3317760, while the sum is 57.

The square root of 208988589 is about 14456.4376317266. The cubic root of 208988589 is about 593.4364134827.

The spelling of 208988589 in words is "two hundred eight million, nine hundred eighty-eight thousand, five hundred eighty-nine".