289768469 has 2 divisors, whose sum is σ = 289768470. Its totient is φ = 289768468.

The previous prime is 289768433. The next prime is 289768481. The reversal of 289768469 is 964867982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 287980900 + 1787569 = 16970^2 + 1337^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-289768469 is a prime.

It is a super-2 number, since 2×289768469² = 167931531253207922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289767469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144884234 + 144884235.

It is an arithmetic number, because the mean of its divisors is an integer number (144884235).

Almost surely, 2^289768469 is an apocalyptic number.

It is an amenable number.

289768469 is a deficient number, since it is larger than the sum of its proper divisors (1).

289768469 is an equidigital number, since it uses as much as digits as its factorization.

289768469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10450944, while the sum is 59.

The square root of 289768469 is about 17022.5870243039. The cubic root of 289768469 is about 661.7343952339.

The spelling of 289768469 in words is "two hundred eighty-nine million, seven hundred sixty-eight thousand, four hundred sixty-nine".