289220539 has 2 divisors, whose sum is σ = 289220540. Its totient is φ = 289220538.

The previous prime is 289220531. The next prime is 289220557. The reversal of 289220539 is 935022982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 289220539 - 2³ = 289220531 is a prime.

It is not a weakly prime, because it can be changed into another prime (289220531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144610269 + 144610270.

It is an arithmetic number, because the mean of its divisors is an integer number (144610270).

Almost surely, 2^289220539 is an apocalyptic number.

289220539 is a deficient number, since it is larger than the sum of its proper divisors (1).

289220539 is an equidigital number, since it uses as much as digits as its factorization.

289220539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 289220539 is about 17006.4852041802. The cubic root of 289220539 is about 661.3170356911.

The spelling of 289220539 in words is "two hundred eighty-nine million, two hundred twenty thousand, five hundred thirty-nine".