1444520001 has 4 divisors (see below), whose sum is σ = 1926026672. Its totient is φ = 963013332.

The previous prime is 1444519987. The next prime is 1444520053. The reversal of 1444520001 is 1000254441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1444520001 - 2⁵ = 1444519969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1444520001.

It is not an unprimeable number, because it can be changed into a prime (1444525001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240753331 + ... + 240753336.

It is an arithmetic number, because the mean of its divisors is an integer number (481506668).

Almost surely, 2^1444520001 is an apocalyptic number.

It is an amenable number.

1444520001 is a deficient number, since it is larger than the sum of its proper divisors (481506671).

1444520001 is an equidigital number, since it uses as much as digits as its factorization.

1444520001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481506670.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1444520001 is about 38006.8415025506. The cubic root of 1444520001 is about 1130.4235238602.

Adding to 1444520001 its reverse (1000254441), we get a palindrome (2444774442).

The spelling of 1444520001 in words is "one billion, four hundred forty-four million, five hundred twenty thousand, one".