8454221 has 8 divisors (see below), whose sum is σ = 8928000. Its totient is φ = 7983360.

The previous prime is 8454217. The next prime is 8454223. The reversal of 8454221 is 1224548.

It is a happy number.

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 8454221 - 2² = 8454217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8454223) 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, 8036 + ... + 9026.

It is an arithmetic number, because the mean of its divisors is an integer number (1116000).

Almost surely, 2^8454221 is an apocalyptic number.

It is an amenable number.

8454221 is a deficient number, since it is larger than the sum of its proper divisors (473779).

8454221 is a wasteful number, since it uses less digits than its factorization.

8454221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459.

The product of its digits is 2560, while the sum is 26.

The square root of 8454221 is about 2907.6143141758. The cubic root of 8454221 is about 203.7157148077.

Adding to 8454221 its reverse (1224548), we get a palindrome (9678769).

The spelling of 8454221 in words is "eight million, four hundred fifty-four thousand, two hundred twenty-one".