447628645309 has 2 divisors, whose sum is σ = 447628645310. Its totient is φ = 447628645308.

The previous prime is 447628645301. The next prime is 447628645337. The reversal of 447628645309 is 903546826744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 447456642084 + 172003225 = 668922^2 + 13115^2 .

It is a cyclic number.

It is not a de Polignac number, because 447628645309 - 2³ = 447628645301 is a prime.

It is a super-3 number, since 3×447628645309³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (447628645301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223814322654 + 223814322655.

It is an arithmetic number, because the mean of its divisors is an integer number (223814322655).

Almost surely, 2^447628645309 is an apocalyptic number.

It is an amenable number.

447628645309 is a deficient number, since it is larger than the sum of its proper divisors (1).

447628645309 is an equidigital number, since it uses as much as digits as its factorization.

447628645309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34836480, while the sum is 58.

The spelling of 447628645309 in words is "four hundred forty-seven billion, six hundred twenty-eight million, six hundred forty-five thousand, three hundred nine".