8989581 has 4 divisors (see below), whose sum is σ = 11986112. Its totient is φ = 5993052.

The previous prime is 8989579. The next prime is 8989601. The reversal of 8989581 is 1859898.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8989581 - 2¹ = 8989579 is a prime.

It is a super-3 number, since 3×8989581³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8989581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8989511) 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 3 ways as a sum of consecutive naturals, for example, 1498261 + ... + 1498266.

It is an arithmetic number, because the mean of its divisors is an integer number (2996528).

Almost surely, 2^8989581 is an apocalyptic number.

It is an amenable number.

8989581 is a deficient number, since it is larger than the sum of its proper divisors (2996531).

8989581 is a wasteful number, since it uses less digits than its factorization.

8989581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2996530.

The product of its digits is 207360, while the sum is 48.

The square root of 8989581 is about 2998.2629971368. The cubic root of 8989581 is about 207.9280831871.

The spelling of 8989581 in words is "eight million, nine hundred eighty-nine thousand, five hundred eighty-one".