8494221 has 4 divisors (see below), whose sum is σ = 11325632. Its totient is φ = 5662812.

The previous prime is 8494219. The next prime is 8494231. The reversal of 8494221 is 1224948.

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 not a de Polignac number, because 8494221 - 2¹ = 8494219 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 (8494231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1415701 + ... + 1415706.

It is an arithmetic number, because the mean of its divisors is an integer number (2831408).

Almost surely, 2^8494221 is an apocalyptic number.

It is an amenable number.

8494221 is a deficient number, since it is larger than the sum of its proper divisors (2831411).

8494221 is a wasteful number, since it uses less digits than its factorization.

8494221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2831410.

The product of its digits is 4608, while the sum is 30.

The square root of 8494221 is about 2914.4846885856. The cubic root of 8494221 is about 204.0364938556.

The spelling of 8494221 in words is "eight million, four hundred ninety-four thousand, two hundred twenty-one".