289608057 has 12 divisors (see below), whose sum is σ = 418534740. Its totient is φ = 192974208.

The previous prime is 289608043. The next prime is 289608061. The reversal of 289608057 is 750806982.

It can be written as a sum of positive squares in 2 ways, for example, as 184525056 + 105083001 = 13584^2 + 10251^2 .

It is not a de Polignac number, because 289608057 - 2⁴ = 289608041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (289608857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13669 + ... + 27677.

It is an arithmetic number, because the mean of its divisors is an integer number (34877895).

Almost surely, 2^289608057 is an apocalyptic number.

It is an amenable number.

289608057 is a deficient number, since it is larger than the sum of its proper divisors (128926683).

289608057 is a wasteful number, since it uses less digits than its factorization.

289608057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16312 (or 16309 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 289608057 is about 17017.8746322800. The cubic root of 289608057 is about 661.6122635518.

The spelling of 289608057 in words is "two hundred eighty-nine million, six hundred eight thousand, fifty-seven".