1444839140 has 12 divisors (see below), whose sum is σ = 3034162236. Its totient is φ = 577935648.

The previous prime is 1444839043. The next prime is 1444839181. The reversal of 1444839140 is 419384441.

It can be written as a sum of positive squares in 2 ways, for example, as 164916964 + 1279922176 = 12842^2 + 35776^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1444839094 and 1444839103.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36120959 + ... + 36120998.

It is an arithmetic number, because the mean of its divisors is an integer number (252846853).

Almost surely, 2^1444839140 is an apocalyptic number.

1444839140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1444839140 is an abundant number, since it is smaller than the sum of its proper divisors (1589323096).

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

1444839140 is a wasteful number, since it uses less digits than its factorization.

1444839140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72241966 (or 72241964 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 1444839140 is about 38011.0397121678. The cubic root of 1444839140 is about 1130.5067661987.

The spelling of 1444839140 in words is "one billion, four hundred forty-four million, eight hundred thirty-nine thousand, one hundred forty".