8898021 has 36 divisors (see below), whose sum is σ = 14942304. Its totient is φ = 5059200.

The previous prime is 8898017. The next prime is 8898031. The reversal of 8898021 is 1208988.

It is not a de Polignac number, because 8898021 - 2² = 8898017 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8898031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 28456 + ... + 28766.

It is an arithmetic number, because the mean of its divisors is an integer number (415064).

Almost surely, 2^8898021 is an apocalyptic number.

It is an amenable number.

8898021 is a deficient number, since it is larger than the sum of its proper divisors (6044283).

8898021 is a wasteful number, since it uses less digits than its factorization.

8898021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 8898021 is about 2982.9550784415. The cubic root of 8898021 is about 207.2197484320.

The spelling of 8898021 in words is "eight million, eight hundred ninety-eight thousand, twenty-one".