289685323 has 2 divisors, whose sum is σ = 289685324. Its totient is φ = 289685322.

The previous prime is 289685317. The next prime is 289685351. The reversal of 289685323 is 323586982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 289685323 - 2¹³ = 289677131 is a prime.

It is a super-2 number, since 2×289685323² = 167835172723228658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (289685303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144842661 + 144842662.

It is an arithmetic number, because the mean of its divisors is an integer number (144842662).

Almost surely, 2^289685323 is an apocalyptic number.

289685323 is a deficient number, since it is larger than the sum of its proper divisors (1).

289685323 is an equidigital number, since it uses as much as digits as its factorization.

289685323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 46.

The square root of 289685323 is about 17020.1446233573. The cubic root of 289685323 is about 661.6710966153.

The spelling of 289685323 in words is "two hundred eighty-nine million, six hundred eighty-five thousand, three hundred twenty-three".