4221284 has 6 divisors (see below), whose sum is σ = 7387254. Its totient is φ = 2110640.

The previous prime is 4221281. The next prime is 4221299. The reversal of 4221284 is 4821224.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3717184 + 504100 = 1928^2 + 710^2 .

It is not an unprimeable number, because it can be changed into a prime (4221281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527657 + ... + 527664.

It is an arithmetic number, because the mean of its divisors is an integer number (1231209).

Almost surely, 2^4221284 is an apocalyptic number.

It is an amenable number.

4221284 is a deficient number, since it is larger than the sum of its proper divisors (3165970).

4221284 is a wasteful number, since it uses less digits than its factorization.

4221284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055325 (or 1055323 counting only the distinct ones).

The product of its digits is 1024, while the sum is 23.

The square root of 4221284 is about 2054.5763553589. The cubic root of 4221284 is about 161.6149469069.

The spelling of 4221284 in words is "four million, two hundred twenty-one thousand, two hundred eighty-four".