8861021 has 8 divisors (see below), whose sum is σ = 9569280. Its totient is φ = 8156592.

The previous prime is 8860993. The next prime is 8861059. The reversal of 8861021 is 1201688.

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

It is a cyclic number.

It is not a de Polignac number, because 8861021 - 2¹⁰ = 8859997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8861921) 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 7 ways as a sum of consecutive naturals, for example, 5516 + ... + 6938.

It is an arithmetic number, because the mean of its divisors is an integer number (1196160).

Almost surely, 2^8861021 is an apocalyptic number.

It is an amenable number.

8861021 is a deficient number, since it is larger than the sum of its proper divisors (708259).

8861021 is a wasteful number, since it uses less digits than its factorization.

8861021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1915.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 8861021 is about 2976.7467141159. The cubic root of 8861021 is about 206.9321270783.

The spelling of 8861021 in words is "eight million, eight hundred sixty-one thousand, twenty-one".