8940921 has 8 divisors (see below), whose sum is σ = 13005024. Its totient is φ = 5418720.

The previous prime is 8940917. The next prime is 8940923. The reversal of 8940921 is 1290498.

8940921 is digitally balanced in base 2, 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 8940921 - 2² = 8940917 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 270937 = 8940921 / (8 + 9 + 4 + 0 + 9 + 2 + 1).

It is not an unprimeable number, because it can be changed into a prime (8940923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135436 + ... + 135501.

It is an arithmetic number, because the mean of its divisors is an integer number (1625628).

Almost surely, 2^8940921 is an apocalyptic number.

It is an amenable number.

8940921 is a deficient number, since it is larger than the sum of its proper divisors (4064103).

8940921 is a wasteful number, since it uses less digits than its factorization.

8940921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270951.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 8940921 is about 2990.1372878181. The cubic root of 8940921 is about 207.5522372959.

The spelling of 8940921 in words is "eight million, nine hundred forty thousand, nine hundred twenty-one".