9859973 has 2 divisors, whose sum is σ = 9859974. Its totient is φ = 9859972.

The previous prime is 9859963. The next prime is 9859981. The reversal of 9859973 is 3799589.

9859973 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., 6980164 + 2879809 = 2642^2 + 1697^2 .

It is an emirp because it is prime and its reverse (3799589) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9859973 - 2⁴ = 9859957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9859963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4929986 + 4929987.

It is an arithmetic number, because the mean of its divisors is an integer number (4929987).

Almost surely, 2^9859973 is an apocalyptic number.

It is an amenable number.

9859973 is a deficient number, since it is larger than the sum of its proper divisors (1).

9859973 is an equidigital number, since it uses as much as digits as its factorization.

9859973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360, while the sum is 50.

The square root of 9859973 is about 3140.0593943427. The cubic root of 9859973 is about 214.4331417009.

The spelling of 9859973 in words is "nine million, eight hundred fifty-nine thousand, nine hundred seventy-three".