8869521 has 8 divisors (see below), whose sum is σ = 11840320. Its totient is φ = 5905872.

The previous prime is 8869507. The next prime is 8869547. The reversal of 8869521 is 1259688.

8869521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8869521 - 2⁹ = 8869009 is a prime.

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 8869521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8869591) 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 7 ways as a sum of consecutive naturals, for example, 2775 + ... + 5043.

It is an arithmetic number, because the mean of its divisors is an integer number (1480040).

Almost surely, 2^8869521 is an apocalyptic number.

It is an amenable number.

8869521 is a deficient number, since it is larger than the sum of its proper divisors (2970799).

8869521 is a wasteful number, since it uses less digits than its factorization.

8869521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3575.

The product of its digits is 34560, while the sum is 39.

The square root of 8869521 is about 2978.1741050516. The cubic root of 8869521 is about 206.9982729908.

The spelling of 8869521 in words is "eight million, eight hundred sixty-nine thousand, five hundred twenty-one".