289561373 has 2 divisors, whose sum is σ = 289561374. Its totient is φ = 289561372.

The previous prime is 289561361. The next prime is 289561403. The reversal of 289561373 is 373165982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214271044 + 75290329 = 14638^2 + 8677^2 .

It is a cyclic number.

It is not a de Polignac number, because 289561373 - 2¹⁸ = 289299229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289561333) 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, 144780686 + 144780687.

It is an arithmetic number, because the mean of its divisors is an integer number (144780687).

Almost surely, 2^289561373 is an apocalyptic number.

It is an amenable number.

289561373 is a deficient number, since it is larger than the sum of its proper divisors (1).

289561373 is an equidigital number, since it uses as much as digits as its factorization.

289561373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 44.

The square root of 289561373 is about 17016.5029603617. The cubic root of 289561373 is about 661.5767116326.

The spelling of 289561373 in words is "two hundred eighty-nine million, five hundred sixty-one thousand, three hundred seventy-three".