289205090 has 8 divisors (see below), whose sum is σ = 520569180. Its totient is φ = 115682032.

The previous prime is 289205039. The next prime is 289205159. The reversal of 289205090 is 90502982.

289205090 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 287336401 + 1868689 = 16951^2 + 1367^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 289205090.

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, 14460245 + ... + 14460264.

Almost surely, 2^289205090 is an apocalyptic number.

289205090 is a deficient number, since it is larger than the sum of its proper divisors (231364090).

289205090 is a wasteful number, since it uses less digits than its factorization.

289205090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28920516.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 289205090 is about 17006.0309890344. The cubic root of 289205090 is about 661.3052605145.

It can be divided in two parts, 289 and 205090, that added together give a cube (205379 = 59³).

The spelling of 289205090 in words is "two hundred eighty-nine million, two hundred five thousand, ninety".