424444321 has 32 divisors (see below), whose sum is σ = 531014400. Its totient is φ = 337897728.

The previous prime is 424444301. The next prime is 424444331. The reversal of 424444321 is 123444424.

It is not a de Polignac number, because 424444321 - 2⁹ = 424443809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 424444321.

It is not an unprimeable number, because it can be changed into a prime (424444301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 483535 + ... + 484411.

It is an arithmetic number, because the mean of its divisors is an integer number (16594200).

Almost surely, 2^424444321 is an apocalyptic number.

It is an amenable number.

424444321 is a deficient number, since it is larger than the sum of its proper divisors (106570079).

424444321 is an equidigital number, since it uses as much as digits as its factorization.

424444321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998 (or 984 counting only the distinct ones).

The product of its digits is 12288, while the sum is 28.

The square root of 424444321 is about 20602.0465245567. The cubic root of 424444321 is about 751.5194800873.

Adding to 424444321 its reverse (123444424), we get a palindrome (547888745).

The spelling of 424444321 in words is "four hundred twenty-four million, four hundred forty-four thousand, three hundred twenty-one".