289033897 has 2 divisors, whose sum is σ = 289033898. Its totient is φ = 289033896.

The previous prime is 289033891. The next prime is 289033961. The reversal of 289033897 is 798330982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 273439296 + 15594601 = 16536^2 + 3949^2 .

It is a cyclic number.

It is not a de Polignac number, because 289033897 - 2³ = 289033889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 289033897.

It is not a weakly prime, because it can be changed into another prime (289033891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144516948 + 144516949.

It is an arithmetic number, because the mean of its divisors is an integer number (144516949).

Almost surely, 2^289033897 is an apocalyptic number.

It is an amenable number.

289033897 is a deficient number, since it is larger than the sum of its proper divisors (1).

289033897 is an equidigital number, since it uses as much as digits as its factorization.

289033897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 289033897 is about 17000.9969413561. The cubic root of 289033897 is about 661.1747496984.

The spelling of 289033897 in words is "two hundred eighty-nine million, thirty-three thousand, eight hundred ninety-seven".