444228642 has 48 divisors (see below), whose sum is σ = 1130770368. Its totient is φ = 124259040.

The previous prime is 444228619. The next prime is 444228643. The reversal of 444228642 is 246822444.

It is a happy number.

444228642 is a `hidden beast` number, since 4 + 4 + 4 + 2 + 2 + 8 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 444228597 and 444228606.

It is not an unprimeable number, because it can be changed into a prime (444228643) 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 23 ways as a sum of consecutive naturals, for example, 83718 + ... + 88865.

It is an arithmetic number, because the mean of its divisors is an integer number (23557716).

Almost surely, 2^444228642 is an apocalyptic number.

444228642 is an abundant number, since it is smaller than the sum of its proper divisors (686541726).

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

444228642 is a wasteful number, since it uses less digits than its factorization.

444228642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172615 (or 172612 counting only the distinct ones).

The product of its digits is 98304, while the sum is 36.

The square root of 444228642 is about 21076.7322419772. The cubic root of 444228642 is about 763.0192923063.

The spelling of 444228642 in words is "four hundred forty-four million, two hundred twenty-eight thousand, six hundred forty-two".