289747097 has 2 divisors, whose sum is σ = 289747098. Its totient is φ = 289747096.

The previous prime is 289747079. The next prime is 289747103. The reversal of 289747097 is 790747982.

Together with previous prime (289747079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228735376 + 61011721 = 15124^2 + 7811^2 .

It is a cyclic number.

It is not a de Polignac number, because 289747097 - 2⁸ = 289746841 is a prime.

It is not a weakly prime, because it can be changed into another prime (289747067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144873548 + 144873549.

It is an arithmetic number, because the mean of its divisors is an integer number (144873549).

Almost surely, 2^289747097 is an apocalyptic number.

It is an amenable number.

289747097 is a deficient number, since it is larger than the sum of its proper divisors (1).

289747097 is an equidigital number, since it uses as much as digits as its factorization.

289747097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1778112, while the sum is 53.

The square root of 289747097 is about 17021.9592585578. The cubic root of 289747097 is about 661.7181259974.

It can be divided in two parts, 2897 and 47097, that added together give a palindrome (49994).

The spelling of 289747097 in words is "two hundred eighty-nine million, seven hundred forty-seven thousand, ninety-seven".