444640242 has 32 divisors (see below), whose sum is σ = 937195200. Its totient is φ = 140246208.

The previous prime is 444640241. The next prime is 444640249. The reversal of 444640242 is 242046444.

It is not an unprimeable number, because it can be changed into a prime (444640241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124668 + ... + 128184.

It is an arithmetic number, because the mean of its divisors is an integer number (29287350).

Almost surely, 2^444640242 is an apocalyptic number.

444640242 is an abundant number, since it is smaller than the sum of its proper divisors (492554958).

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

444640242 is a wasteful number, since it uses less digits than its factorization.

444640242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4650.

The product of its (nonzero) digits is 24576, while the sum is 30.

The square root of 444640242 is about 21086.4943032264. The cubic root of 444640242 is about 763.2548780415.

Adding to 444640242 its reverse (242046444), we get a palindrome (686686686).

It can be divided in two parts, 4446402 and 42, that added together give a palindrome (4446444).

The spelling of 444640242 in words is "four hundred forty-four million, six hundred forty thousand, two hundred forty-two".