8868021 has 4 divisors (see below), whose sum is σ = 11824032. Its totient is φ = 5912012.

The previous prime is 8868017. The next prime is 8868047. The reversal of 8868021 is 1208688.

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 a cyclic number.

It is not a de Polignac number, because 8868021 - 2² = 8868017 is a prime.

It is a super-3 number, since 3×8868021³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8868011) 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, 1478001 + ... + 1478006.

It is an arithmetic number, because the mean of its divisors is an integer number (2956008).

Almost surely, 2^8868021 is an apocalyptic number.

It is an amenable number.

8868021 is a deficient number, since it is larger than the sum of its proper divisors (2956011).

8868021 is a wasteful number, since it uses less digits than its factorization.

8868021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2956010.

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 8868021 is about 2977.9222622493. The cubic root of 8868021 is about 206.9866032545.

The spelling of 8868021 in words is "eight million, eight hundred sixty-eight thousand, twenty-one".