23398289 has 2 divisors, whose sum is σ = 23398290. Its totient is φ = 23398288.

The previous prime is 23398259. The next prime is 23398327. The reversal of 23398289 is 98289332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21529600 + 1868689 = 4640^2 + 1367^2 .

It is a cyclic number.

It is not a de Polignac number, because 23398289 - 2¹⁶ = 23332753 is a prime.

It is not a weakly prime, because it can be changed into another prime (23398229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11699144 + 11699145.

It is an arithmetic number, because the mean of its divisors is an integer number (11699145).

Almost surely, 2^23398289 is an apocalyptic number.

It is an amenable number.

23398289 is a deficient number, since it is larger than the sum of its proper divisors (1).

23398289 is an equidigital number, since it uses as much as digits as its factorization.

23398289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 44.

The square root of 23398289 is about 4837.1777928871. The cubic root of 23398289 is about 286.0188790576.

The spelling of 23398289 in words is "twenty-three million, three hundred ninety-eight thousand, two hundred eighty-nine".