9421586989 has 2 divisors, whose sum is σ = 9421586990. Its totient is φ = 9421586988.

The previous prime is 9421586971. The next prime is 9421587013. The reversal of 9421586989 is 9896851249.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5735032900 + 3686554089 = 75730^2 + 60717^2 .

It is an emirp because it is prime and its reverse (9896851249) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9421586989 - 2⁷ = 9421586861 is a prime.

It is a super-2 number, since 2×9421586989² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9421586969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4710793494 + 4710793495.

It is an arithmetic number, because the mean of its divisors is an integer number (4710793495).

Almost surely, 2^9421586989 is an apocalyptic number.

It is an amenable number.

9421586989 is a deficient number, since it is larger than the sum of its proper divisors (1).

9421586989 is an equidigital number, since it uses as much as digits as its factorization.

9421586989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11197440, while the sum is 61.

The square root of 9421586989 is about 97064.8597021600. The cubic root of 9421586989 is about 2112.0686038279.

The spelling of 9421586989 in words is "nine billion, four hundred twenty-one million, five hundred eighty-six thousand, nine hundred eighty-nine".