4221447 has 8 divisors (see below), whose sum is σ = 5708160. Its totient is φ = 2774520.

The previous prime is 4221433. The next prime is 4221449. The reversal of 4221447 is 7441224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4221447 - 2¹⁰ = 4220423 is a prime.

It is a super-2 number, since 2×4221447² = 35641229547618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221449) 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, 9697 + ... + 10122.

It is an arithmetic number, because the mean of its divisors is an integer number (713520).

Almost surely, 2^4221447 is an apocalyptic number.

4221447 is a deficient number, since it is larger than the sum of its proper divisors (1486713).

4221447 is a wasteful number, since it uses less digits than its factorization.

4221447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19893.

The product of its digits is 1792, while the sum is 24.

The square root of 4221447 is about 2054.6160225210. The cubic root of 4221447 is about 161.6170270715.

The spelling of 4221447 in words is "four million, two hundred twenty-one thousand, four hundred forty-seven".