4459421 has 6 divisors (see below), whose sum is σ = 4515450. Its totient is φ = 4403888.

The previous prime is 4459409. The next prime is 4459451. The reversal of 4459421 is 1249544.

It can be written as a sum of positive squares in 3 ways, for example, as 1653796 + 2805625 = 1286^2 + 1675^2 .

It is not a de Polignac number, because 4459421 - 2¹⁴ = 4443037 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 (4459451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25691 + ... + 25863.

It is an arithmetic number, because the mean of its divisors is an integer number (752575).

Almost surely, 2^4459421 is an apocalyptic number.

It is an amenable number.

4459421 is a deficient number, since it is larger than the sum of its proper divisors (56029).

4459421 is an equidigital number, since it uses as much as digits as its factorization.

4459421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495 (or 322 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 4459421 is about 2111.7341215219. The cubic root of 4459421 is about 164.5986080502.

The spelling of 4459421 in words is "four million, four hundred fifty-nine thousand, four hundred twenty-one".