8933921 has 4 divisors (see below), whose sum is σ = 9222144. Its totient is φ = 8645700.

The previous prime is 8933917. The next prime is 8933927. The reversal of 8933921 is 1293398.

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 8933921 - 2² = 8933917 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (8933927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144065 + ... + 144126.

It is an arithmetic number, because the mean of its divisors is an integer number (2305536).

Almost surely, 2^8933921 is an apocalyptic number.

It is an amenable number.

8933921 is a deficient number, since it is larger than the sum of its proper divisors (288223).

8933921 is a wasteful number, since it uses less digits than its factorization.

8933921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288222.

The product of its digits is 11664, while the sum is 35.

The square root of 8933921 is about 2988.9665438074. The cubic root of 8933921 is about 207.4980577551.

The spelling of 8933921 in words is "eight million, nine hundred thirty-three thousand, nine hundred twenty-one".