1447445643 has 48 divisors (see below), whose sum is σ = 2299772160. Its totient is φ = 807153984.

The previous prime is 1447445627. The next prime is 1447445687. The reversal of 1447445643 is 3465447441.

It is not a de Polignac number, because 1447445643 - 2⁴ = 1447445627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1447445595 and 1447445604.

It is not an unprimeable number, because it can be changed into a prime (1447445693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1361130 + ... + 1362192.

It is an arithmetic number, because the mean of its divisors is an integer number (47911920).

Almost surely, 2^1447445643 is an apocalyptic number.

1447445643 is a deficient number, since it is larger than the sum of its proper divisors (852326517).

1447445643 is a wasteful number, since it uses less digits than its factorization.

1447445643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296 (or 1289 counting only the distinct ones).

The product of its digits is 645120, while the sum is 42.

The square root of 1447445643 is about 38045.3103943180. The cubic root of 1447445643 is about 1131.1861726531.

The spelling of 1447445643 in words is "one billion, four hundred forty-seven million, four hundred forty-five thousand, six hundred forty-three".