8194421 has 8 divisors (see below), whose sum is σ = 8346624. Its totient is φ = 8043840.

The previous prime is 8194411. The next prime is 8194429. The reversal of 8194421 is 1244918.

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 8194421 - 2¹⁰ = 8193397 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 (8194429) 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, 14066 + ... + 14636.

It is an arithmetic number, because the mean of its divisors is an integer number (1043328).

Almost surely, 2^8194421 is an apocalyptic number.

It is an amenable number.

8194421 is a deficient number, since it is larger than the sum of its proper divisors (152203).

8194421 is a wasteful number, since it uses less digits than its factorization.

8194421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811.

The product of its digits is 2304, while the sum is 29.

The square root of 8194421 is about 2862.5899112517. The cubic root of 8194421 is about 201.6072245485.

The spelling of 8194421 in words is "eight million, one hundred ninety-four thousand, four hundred twenty-one".