1444055540 has 24 divisors (see below), whose sum is σ = 3040450560. Its totient is φ = 576111008.

The previous prime is 1444055539. The next prime is 1444055579. The reversal of 1444055540 is 455504441.

It is a junction number, because it is equal to n+sod(n) for n = 1444055497 and 1444055506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86600 + ... + 101919.

It is an arithmetic number, because the mean of its divisors is an integer number (126685440).

Almost surely, 2^1444055540 is an apocalyptic number.

1444055540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1444055540 is an abundant number, since it is smaller than the sum of its proper divisors (1596395020).

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

1444055540 is a wasteful number, since it uses less digits than its factorization.

1444055540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188911 (or 188909 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 32.

The square root of 1444055540 is about 38000.7307824468. The cubic root of 1444055540 is about 1130.3023546778.

Adding to 1444055540 its reverse (455504441), we get a palindrome (1899559981).

The spelling of 1444055540 in words is "one billion, four hundred forty-four million, fifty-five thousand, five hundred forty".