444404424 has 16 divisors (see below), whose sum is σ = 1111011120. Its totient is φ = 148134800.

The previous prime is 444404423. The next prime is 444404449. The reversal of 444404424 is 424404444.

It is a junction number, because it is equal to n+sod(n) for n = 444404391 and 444404400.

It is not an unprimeable number, because it can be changed into a prime (444404423) 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, 9258402 + ... + 9258449.

It is an arithmetic number, because the mean of its divisors is an integer number (69438195).

Almost surely, 2^444404424 is an apocalyptic number.

It is an amenable number.

444404424 is an abundant number, since it is smaller than the sum of its proper divisors (666606696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

444404424 is a wasteful number, since it uses less digits than its factorization.

444404424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18516860 (or 18516856 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 30.

The square root of 444404424 is about 21080.9018782404. The cubic root of 444404424 is about 763.1199216949.

Adding to 444404424 its reverse (424404444), we get a palindrome (868808868).

The spelling of 444404424 in words is "four hundred forty-four million, four hundred four thousand, four hundred twenty-four".