4425439 has 4 divisors (see below), whose sum is σ = 4429656. Its totient is φ = 4421224.

The previous prime is 4425437. The next prime is 4425497. The reversal of 4425439 is 9345244.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4425439 - 2¹ = 4425437 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 4⁶ + 4⁷ + 2¹⁷ + 5⁷ + 4¹¹ + 3⁶ + 9³ .

It is a Duffinian number.

4425439 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4425439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4425433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 852 + ... + 3094.

It is an arithmetic number, because the mean of its divisors is an integer number (1107414).

Almost surely, 2^4425439 is an apocalyptic number.

4425439 is a deficient number, since it is larger than the sum of its proper divisors (4217).

4425439 is a wasteful number, since it uses less digits than its factorization.

4425439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4216.

The product of its digits is 17280, while the sum is 31.

The square root of 4425439 is about 2103.6727407085. The cubic root of 4425439 is about 164.1794461552.

The spelling of 4425439 in words is "four million, four hundred twenty-five thousand, four hundred thirty-nine".