289229123 has 2 divisors, whose sum is σ = 289229124. Its totient is φ = 289229122.

The previous prime is 289229119. The next prime is 289229147. The reversal of 289229123 is 321922982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 289229123 - 2² = 289229119 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (289229183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144614561 + 144614562.

It is an arithmetic number, because the mean of its divisors is an integer number (144614562).

Almost surely, 2^289229123 is an apocalyptic number.

289229123 is a deficient number, since it is larger than the sum of its proper divisors (1).

289229123 is an equidigital number, since it uses as much as digits as its factorization.

289229123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 38.

The square root of 289229123 is about 17006.7375766194. The cubic root of 289229123 is about 661.3235782062.

The spelling of 289229123 in words is "two hundred eighty-nine million, two hundred twenty-nine thousand, one hundred twenty-three".