9723805457 has 2 divisors, whose sum is σ = 9723805458. Its totient is φ = 9723805456.

The previous prime is 9723805439. The next prime is 9723805463. The reversal of 9723805457 is 7545083279.

9723805457 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7736785681 + 1987019776 = 87959^2 + 44576^2 .

It is a cyclic number.

It is not a de Polignac number, because 9723805457 - 2⁶ = 9723805393 is a prime.

It is not a weakly prime, because it can be changed into another prime (9723805417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4861902728 + 4861902729.

It is an arithmetic number, because the mean of its divisors is an integer number (4861902729).

Almost surely, 2^9723805457 is an apocalyptic number.

It is an amenable number.

9723805457 is a deficient number, since it is larger than the sum of its proper divisors (1).

9723805457 is an equidigital number, since it uses as much as digits as its factorization.

9723805457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2116800, while the sum is 50.

The square root of 9723805457 is about 98609.3578571527. The cubic root of 9723805457 is about 2134.4144567367.

The spelling of 9723805457 in words is "nine billion, seven hundred twenty-three million, eight hundred five thousand, four hundred fifty-seven".