9023456789 has 2 divisors, whose sum is σ = 9023456790. Its totient is φ = 9023456788.

The previous prime is 9023456759. The next prime is 9023456851. The reversal of 9023456789 is 9876543209.

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., 8884570564 + 138886225 = 94258^2 + 11785^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9023456789 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9023456789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9023456759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4511728394 + 4511728395.

It is an arithmetic number, because the mean of its divisors is an integer number (4511728395).

Almost surely, 2^9023456789 is an apocalyptic number.

It is an amenable number.

9023456789 is a deficient number, since it is larger than the sum of its proper divisors (1).

9023456789 is an equidigital number, since it uses as much as digits as its factorization.

9023456789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The square root of 9023456789 is about 94991.8774896043. The cubic root of 9023456789 is about 2081.8893697004.

The spelling of 9023456789 in words is "nine billion, twenty-three million, four hundred fifty-six thousand, seven hundred eighty-nine".