1444140400 has 30 divisors (see below), whose sum is σ = 3469548272. Its totient is φ = 577656000.

The previous prime is 1444140389. The next prime is 1444140403. The reversal of 1444140400 is 40414441.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444140403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1804776 + ... + 1805575.

Almost surely, 2^1444140400 is an apocalyptic number.

1444140400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1444140400 is an abundant number, since it is smaller than the sum of its proper divisors (2025407872).

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

1444140400 is a wasteful number, since it uses less digits than its factorization.

1444140400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3610369 (or 3610358 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 1444140400 is about 38001.8473235184. The cubic root of 1444140400 is about 1130.3244950033.

Adding to 1444140400 its reverse (40414441), we get a palindrome (1484554841).

The spelling of 1444140400 in words is "one billion, four hundred forty-four million, one hundred forty thousand, four hundred".