1444020100440 has 64 divisors (see below), whose sum is σ = 4332791865600. Its totient is φ = 385006998912.

The previous prime is 1444020100403. The next prime is 1444020100447. The reversal of 1444020100440 is 440010204441.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1444020100440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444020100447) 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, 300412 + ... + 1725771.

It is an arithmetic number, because the mean of its divisors is an integer number (67699872900).

Almost surely, 2^{1444020100440} is an apocalyptic number.

1444020100440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1444020100440 is an abundant number, since it is smaller than the sum of its proper divisors (2888771765160).

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

1444020100440 is a wasteful number, since it uses less digits than its factorization.

1444020100440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032136 (or 2032132 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 1444020100440 its reverse (440010204441), we get a palindrome (1884030304881).

The spelling of 1444020100440 in words is "one trillion, four hundred forty-four billion, twenty million, one hundred thousand, four hundred forty".