289322273 has 2 divisors, whose sum is σ = 289322274. Its totient is φ = 289322272.

The previous prime is 289322263. The next prime is 289322279. The reversal of 289322273 is 372223982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145130209 + 144192064 = 12047^2 + 12008^2 .

It is a cyclic number.

It is not a de Polignac number, because 289322273 - 2¹⁴ = 289305889 is a prime.

It is not a weakly prime, because it can be changed into another prime (289322279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144661136 + 144661137.

It is an arithmetic number, because the mean of its divisors is an integer number (144661137).

Almost surely, 2^289322273 is an apocalyptic number.

It is an amenable number.

289322273 is a deficient number, since it is larger than the sum of its proper divisors (1).

289322273 is an equidigital number, since it uses as much as digits as its factorization.

289322273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 38.

The square root of 289322273 is about 17009.4759766431. The cubic root of 289322273 is about 661.3945665385.

The spelling of 289322273 in words is "two hundred eighty-nine million, three hundred twenty-two thousand, two hundred seventy-three".