8851021 has 4 divisors (see below), whose sum is σ = 9235872. Its totient is φ = 8466172.

The previous prime is 8851009. The next prime is 8851043. The reversal of 8851021 is 1201588.

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 8851021 - 2⁹ = 8850509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8851091) 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, 192391 + ... + 192436.

It is an arithmetic number, because the mean of its divisors is an integer number (2308968).

Almost surely, 2^8851021 is an apocalyptic number.

It is an amenable number.

8851021 is a deficient number, since it is larger than the sum of its proper divisors (384851).

8851021 is a wasteful number, since it uses less digits than its factorization.

8851021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384850.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 8851021 is about 2975.0665538774. The cubic root of 8851021 is about 206.8542541787.

The spelling of 8851021 in words is "eight million, eight hundred fifty-one thousand, twenty-one".