1440449472 has 336 divisors, whose sum is σ = 5003596800. Its totient is φ = 361267200.

The previous prime is 1440449453. The next prime is 1440449473. The reversal of 1440449472 is 2749440441.

It is a tau number, because it is divible by the number of its divisors (336).

It is a self number, because there is not a number n which added to its sum of digits gives 1440449472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440449473) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3207904 + ... + 3208352.

Almost surely, 2^1440449472 is an apocalyptic number.

1440449472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1440449472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2501798400).

1440449472 is an abundant number, since it is smaller than the sum of its proper divisors (3563147328).

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

1440449472 is a wasteful number, since it uses less digits than its factorization.

1440449472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520 (or 503 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The square root of 1440449472 is about 37953.2537735568. The cubic root of 1440449472 is about 1129.3607139200.

The spelling of 1440449472 in words is "one billion, four hundred forty million, four hundred forty-nine thousand, four hundred seventy-two".