447740309956 has 27 divisors (see below), whose sum is σ = 788938286157. Its totient is φ = 222339845520.

The previous prime is 447740309917. The next prime is 447740309959. The reversal of 447740309956 is 659903047744.

The square root of 447740309956 is 669134.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 131239552900 + 316500757056 = 362270^2 + 562584^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 447740309956.

It is not an unprimeable number, because it can be changed into a prime (447740309959) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 210107011 + ... + 210109141.

Almost surely, 2^447740309956 is an apocalyptic number.

447740309956 is the 669134-th square number.

It is an amenable number.

447740309956 is a deficient number, since it is larger than the sum of its proper divisors (341197976201).

447740309956 is an frugal number, since it uses more digits than its factorization.

447740309956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4580 (or 2290 counting only the distinct ones).

The product of its (nonzero) digits is 22861440, while the sum is 58.

The spelling of 447740309956 in words is "four hundred forty-seven billion, seven hundred forty million, three hundred nine thousand, nine hundred fifty-six".