444441223001 has 4 divisors (see below), whose sum is σ = 470584824372. Its totient is φ = 418297621632.

The previous prime is 444441222991. The next prime is 444441223021. The reversal of 444441223001 is 100322144444.

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

It can be written as a sum of positive squares in 2 ways, for example, as 214995432976 + 229445790025 = 463676^2 + 479005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444441223001 is a prime.

It is a super-2 number, since 2×444441223001² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (444441223021) 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, 13071800660 + ... + 13071800693.

It is an arithmetic number, because the mean of its divisors is an integer number (117646206093).

Almost surely, 2^444441223001 is an apocalyptic number.

It is an amenable number.

444441223001 is a deficient number, since it is larger than the sum of its proper divisors (26143601371).

444441223001 is a wasteful number, since it uses less digits than its factorization.

444441223001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26143601370.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 444441223001 its reverse (100322144444), we get a palindrome (544763367445).

The spelling of 444441223001 in words is "four hundred forty-four billion, four hundred forty-one million, two hundred twenty-three thousand, one".