289000001 has 2 divisors, whose sum is σ = 289000002. Its totient is φ = 289000000.

The previous prime is 288999979. The next prime is 289000009. The reversal of 289000001 is 100000982.

It is a Cunningham number, because it is equal to 17000²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 289000000 + 1 = 17000^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 289000001 - 2¹⁰ = 288998977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (289000009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144500000 + 144500001.

It is an arithmetic number, because the mean of its divisors is an integer number (144500001).

Almost surely, 2^289000001 is an apocalyptic number.

It is an amenable number.

289000001 is a deficient number, since it is larger than the sum of its proper divisors (1).

289000001 is an equidigital number, since it uses as much as digits as its factorization.

289000001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 289000001 is about 17000.0000294118. Note that the first 4 decimals coincide. The cubic root of 289000001 is about 661.1489026084.

Adding to 289000001 its reverse (100000982), we get a palindrome (389000983).

The spelling of 289000001 in words is "two hundred eighty-nine million, one", and thus it is an aban number.