289260189 has 6 divisors (see below), whose sum is σ = 417820286. Its totient is φ = 192840120.

The previous prime is 289260187. The next prime is 289260217. The reversal of 289260189 is 981062982.

It can be written as a sum of positive squares in only one way, i.e., 273340089 + 15920100 = 16533^2 + 3990^2 .

It is not a de Polignac number, because 289260189 - 2¹ = 289260187 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 (289260187) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16070002 + ... + 16070019.

Almost surely, 2^289260189 is an apocalyptic number.

It is an amenable number.

289260189 is a deficient number, since it is larger than the sum of its proper divisors (128560097).

289260189 is a wasteful number, since it uses less digits than its factorization.

289260189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32140027 (or 32140024 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 289260189 is about 17007.6508959938. The cubic root of 289260189 is about 661.3472548708.

The spelling of 289260189 in words is "two hundred eighty-nine million, two hundred sixty thousand, one hundred eighty-nine".