986809073 has 2 divisors, whose sum is σ = 986809074. Its totient is φ = 986809072.

The previous prime is 986809037. The next prime is 986809079. The reversal of 986809073 is 370908689.

986809073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (986809037) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 821223649 + 165585424 = 28657^2 + 12868^2 .

It is an emirp because it is prime and its reverse (370908689) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 986809073 - 2¹² = 986804977 is a prime.

It is not a weakly prime, because it can be changed into another prime (986809079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493404536 + 493404537.

It is an arithmetic number, because the mean of its divisors is an integer number (493404537).

Almost surely, 2^986809073 is an apocalyptic number.

It is an amenable number.

986809073 is a deficient number, since it is larger than the sum of its proper divisors (1).

986809073 is an equidigital number, since it uses as much as digits as its factorization.

986809073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 986809073 is about 31413.5173611616. The cubic root of 986809073 is about 995.5835479994.

The spelling of 986809073 in words is "nine hundred eighty-six million, eight hundred nine thousand, seventy-three".