8194921 has 8 divisors (see below), whose sum is σ = 9428864. Its totient is φ = 6976800.

The previous prime is 8194903. The next prime is 8194931. The reversal of 8194921 is 1294918.

8194921 is digitally balanced in base 3, 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 a cyclic number.

It is not a de Polignac number, because 8194921 - 2⁵ = 8194889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8194931) 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, 2820 + ... + 4933.

It is an arithmetic number, because the mean of its divisors is an integer number (1178608).

Almost surely, 2^8194921 is an apocalyptic number.

It is an amenable number.

8194921 is a deficient number, since it is larger than the sum of its proper divisors (1233943).

8194921 is a wasteful number, since it uses less digits than its factorization.

8194921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7911.

The product of its digits is 5184, while the sum is 34.

The square root of 8194921 is about 2862.6772434209. The cubic root of 8194921 is about 201.6113249627.

The spelling of 8194921 in words is "eight million, one hundred ninety-four thousand, nine hundred twenty-one".