9658989 has 6 divisors (see below), whose sum is σ = 13951886. Its totient is φ = 6439320.

The previous prime is 9658967. The next prime is 9658993. The reversal of 9658989 is 9898569.

9658989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9548100 + 110889 = 3090^2 + 333^2 .

It is not a de Polignac number, because 9658989 - 2⁷ = 9658861 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a zygodrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9658939) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 536602 + ... + 536619.

Almost surely, 2^9658989 is an apocalyptic number.

It is an amenable number.

9658989 is a deficient number, since it is larger than the sum of its proper divisors (4292897).

9658989 is a wasteful number, since it uses less digits than its factorization.

9658989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073227 (or 1073224 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 54.

The square root of 9658989 is about 3107.8914073693. The cubic root of 9658989 is about 212.9661389009.

The spelling of 9658989 in words is "nine million, six hundred fifty-eight thousand, nine hundred eighty-nine".