4659221 has 4 divisors (see below), whose sum is σ = 5324832. Its totient is φ = 3993612.

The previous prime is 4659211. The next prime is 4659223. The reversal of 4659221 is 1229564.

It is a happy number.

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 4659221 - 2¹⁰ = 4658197 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 (4659223) 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, 332795 + ... + 332808.

It is an arithmetic number, because the mean of its divisors is an integer number (1331208).

Almost surely, 2^4659221 is an apocalyptic number.

It is an amenable number.

4659221 is a deficient number, since it is larger than the sum of its proper divisors (665611).

4659221 is an equidigital number, since it uses as much as digits as its factorization.

4659221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665610.

The product of its digits is 4320, while the sum is 29.

The square root of 4659221 is about 2158.5228745603. The cubic root of 4659221 is about 167.0210092253.

The spelling of 4659221 in words is "four million, six hundred fifty-nine thousand, two hundred twenty-one".