1444784872 has 16 divisors (see below), whose sum is σ = 2802384900. Its totient is φ = 697482240.

The previous prime is 1444784849. The next prime is 1444784881. The reversal of 1444784872 is 2784874441.

It can be written as a sum of positive squares in 2 ways, for example, as 1290677476 + 154107396 = 35926^2 + 12414^2 .

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, 3113529 + ... + 3113992.

Almost surely, 2^1444784872 is an apocalyptic number.

It is an amenable number.

1444784872 is a deficient number, since it is larger than the sum of its proper divisors (1357600028).

1444784872 is a wasteful number, since it uses less digits than its factorization.

1444784872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6227556 (or 6227552 counting only the distinct ones).

The product of its digits is 1605632, while the sum is 49.

The square root of 1444784872 is about 38010.3258602186. The cubic root of 1444784872 is about 1130.4926121180.

The spelling of 1444784872 in words is "one billion, four hundred forty-four million, seven hundred eighty-four thousand, eight hundred seventy-two".