8989638 has 24 divisors (see below), whose sum is σ = 20915352. Its totient is φ = 2568384.

The previous prime is 8989637. The next prime is 8989639. The reversal of 8989638 is 8369898.

It is an interprime number because it is at equal distance from previous prime (8989637) and next prime (8989639).

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8989633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14995 + ... + 15582.

It is an arithmetic number, because the mean of its divisors is an integer number (871473).

Almost surely, 2^8989638 is an apocalyptic number.

8989638 is an abundant number, since it is smaller than the sum of its proper divisors (11925714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8989638 is a wasteful number, since it uses less digits than its factorization.

8989638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30596 (or 30589 counting only the distinct ones).

The product of its digits is 746496, while the sum is 51.

The square root of 8989638 is about 2998.2725026255. The cubic root of 8989638 is about 207.9285226543.

The spelling of 8989638 in words is "eight million, nine hundred eighty-nine thousand, six hundred thirty-eight".