1444120040 has 64 divisors (see below), whose sum is σ = 3631158720. Its totient is φ = 512320000.

The previous prime is 1444120037. The next prime is 1444120057. The reversal of 1444120040 is 400214441.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1444119994 and 1444120021.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21986 + ... + 58065.

It is an arithmetic number, because the mean of its divisors is an integer number (56736855).

Almost surely, 2^1444120040 is an apocalyptic number.

1444120040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1444120040 is an abundant number, since it is smaller than the sum of its proper divisors (2187038680).

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

1444120040 is a wasteful number, since it uses less digits than its factorization.

1444120040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80114 (or 80110 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1444120040 is about 38001.5794408601. The cubic root of 1444120040 is about 1130.3191830740.

Adding to 1444120040 its reverse (400214441), we get a palindrome (1844334481).

The spelling of 1444120040 in words is "one billion, four hundred forty-four million, one hundred twenty thousand, forty".