9005989 has 2 divisors, whose sum is σ = 9005990. Its totient is φ = 9005988.

The previous prime is 9005977. The next prime is 9006013. The reversal of 9005989 is 9895009.

9005989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8025889 + 980100 = 2833^2 + 990^2 .

It is an emirp because it is prime and its reverse (9895009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9005989 - 2¹³ = 8997797 is a prime.

It is a super-2 number, since 2×9005989² = 162215675736242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9005089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4502994 + 4502995.

It is an arithmetic number, because the mean of its divisors is an integer number (4502995).

Almost surely, 2^9005989 is an apocalyptic number.

It is an amenable number.

9005989 is a deficient number, since it is larger than the sum of its proper divisors (1).

9005989 is an equidigital number, since it uses as much as digits as its factorization.

9005989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 40.

The square root of 9005989 is about 3000.9980006658. The cubic root of 9005989 is about 208.0545114154.

It can be divided in two parts, 900 and 5989, that added together give a square (6889 = 83²).

The spelling of 9005989 in words is "nine million, five thousand, nine hundred eighty-nine".