2001444322 has 4 divisors (see below), whose sum is σ = 3002166486. Its totient is φ = 1000722160.

The previous prime is 2001444317. The next prime is 2001444329. The reversal of 2001444322 is 2234441002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1469265561 + 532178761 = 38331^2 + 23069^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2001444293 and 2001444302.

It is not an unprimeable number, because it can be changed into a prime (2001444329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500361079 + ... + 500361082.

Almost surely, 2^2001444322 is an apocalyptic number.

2001444322 is a deficient number, since it is larger than the sum of its proper divisors (1000722164).

2001444322 is a wasteful number, since it uses less digits than its factorization.

2001444322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000722163.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 2001444322 is about 44737.5046465491. The cubic root of 2001444322 is about 1260.2242655315.

Adding to 2001444322 its reverse (2234441002), we get a palindrome (4235885324).

The spelling of 2001444322 in words is "two billion, one million, four hundred forty-four thousand, three hundred twenty-two".