447730891409 has 2 divisors, whose sum is σ = 447730891410. Its totient is φ = 447730891408.

The previous prime is 447730891379. The next prime is 447730891513. The reversal of 447730891409 is 904198037744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 368263281409 + 79467610000 = 606847^2 + 281900^2 .

It is a cyclic number.

It is not a de Polignac number, because 447730891409 - 2³⁶ = 379011414673 is a prime.

It is a super-2 number, since 2×447730891409² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (447730831409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223865445704 + 223865445705.

It is an arithmetic number, because the mean of its divisors is an integer number (223865445705).

Almost surely, 2^447730891409 is an apocalyptic number.

It is an amenable number.

447730891409 is a deficient number, since it is larger than the sum of its proper divisors (1).

447730891409 is an equidigital number, since it uses as much as digits as its factorization.

447730891409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6096384, while the sum is 56.

The spelling of 447730891409 in words is "four hundred forty-seven billion, seven hundred thirty million, eight hundred ninety-one thousand, four hundred nine".