923018489 has 2 divisors, whose sum is σ = 923018490. Its totient is φ = 923018488.

The previous prime is 923018483. The next prime is 923018513. The reversal of 923018489 is 984810329.

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., 862303225 + 60715264 = 29365^2 + 7792^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-923018489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (923018483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 461509244 + 461509245.

It is an arithmetic number, because the mean of its divisors is an integer number (461509245).

Almost surely, 2^923018489 is an apocalyptic number.

It is an amenable number.

923018489 is a deficient number, since it is larger than the sum of its proper divisors (1).

923018489 is an equidigital number, since it uses as much as digits as its factorization.

923018489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 923018489 is about 30381.2193468267. The cubic root of 923018489 is about 973.6513420940.

The spelling of 923018489 in words is "nine hundred twenty-three million, eighteen thousand, four hundred eighty-nine".