289868353 has 2 divisors, whose sum is σ = 289868354. Its totient is φ = 289868352.

The previous prime is 289868303. The next prime is 289868419. The reversal of 289868353 is 353868982.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 285508609 + 4359744 = 16897^2 + 2088^2 .

It is a cyclic number.

It is not a de Polignac number, because 289868353 - 2⁹ = 289867841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 289868353.

It is not a weakly prime, because it can be changed into another prime (289868303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144934176 + 144934177.

It is an arithmetic number, because the mean of its divisors is an integer number (144934177).

Almost surely, 2^289868353 is an apocalyptic number.

It is an amenable number.

289868353 is a deficient number, since it is larger than the sum of its proper divisors (1).

289868353 is an equidigital number, since it uses as much as digits as its factorization.

289868353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 52.

The square root of 289868353 is about 17025.5206381479. The cubic root of 289868353 is about 661.8104203968.

The spelling of 289868353 in words is "two hundred eighty-nine million, eight hundred sixty-eight thousand, three hundred fifty-three".