7989973 has 2 divisors, whose sum is σ = 7989974. Its totient is φ = 7989972.

The previous prime is 7989929. The next prime is 7990001. The reversal of 7989973 is 3799897.

7989973 is digitally balanced in base 3, because in such base 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., 5793649 + 2196324 = 2407^2 + 1482^2 .

It is an emirp because it is prime and its reverse (3799897) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7989973 - 2⁹ = 7989461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7989973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7989173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3994986 + 3994987.

It is an arithmetic number, because the mean of its divisors is an integer number (3994987).

Almost surely, 2^7989973 is an apocalyptic number.

It is an amenable number.

7989973 is a deficient number, since it is larger than the sum of its proper divisors (1).

7989973 is an equidigital number, since it uses as much as digits as its factorization.

7989973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 857304, while the sum is 52.

The square root of 7989973 is about 2826.6540290598. The cubic root of 7989973 is about 199.9164067324.

The spelling of 7989973 in words is "seven million, nine hundred eighty-nine thousand, nine hundred seventy-three".