289284289 has 6 divisors (see below), whose sum is σ = 336514434. Its totient is φ = 247957920.

The previous prime is 289284239. The next prime is 289284311. The reversal of 289284289 is 982482982.

It can be written as a sum of positive squares in only one way, i.e., 274995889 + 14288400 = 16583^2 + 3780^2 .

It is not a de Polignac number, because 289284289 - 2¹¹ = 289282241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289284209) 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 in 5 ways as a sum of consecutive naturals, for example, 2951832 + ... + 2951929.

It is an arithmetic number, because the mean of its divisors is an integer number (56085739).

Almost surely, 2^289284289 is an apocalyptic number.

It is an amenable number.

289284289 is a deficient number, since it is larger than the sum of its proper divisors (47230145).

289284289 is an equidigital number, since it uses as much as digits as its factorization.

289284289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5903775 (or 5903768 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 52.

The square root of 289284289 is about 17008.3593859020. The cubic root of 289284289 is about 661.3656212952.

The spelling of 289284289 in words is "two hundred eighty-nine million, two hundred eighty-four thousand, two hundred eighty-nine".