447764549 has 2 divisors, whose sum is σ = 447764550. Its totient is φ = 447764548.

The previous prime is 447764543. The next prime is 447764561. The reversal of 447764549 is 945467744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 335256100 + 112508449 = 18310^2 + 10607^2 .

It is a cyclic number.

It is not a de Polignac number, because 447764549 - 2⁸ = 447764293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 447764497 and 447764506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (447764543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223882274 + 223882275.

It is an arithmetic number, because the mean of its divisors is an integer number (223882275).

Almost surely, 2^447764549 is an apocalyptic number.

It is an amenable number.

447764549 is a deficient number, since it is larger than the sum of its proper divisors (1).

447764549 is an equidigital number, since it uses as much as digits as its factorization.

447764549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3386880, while the sum is 50.

The square root of 447764549 is about 21160.4477504612. The cubic root of 447764549 is about 765.0384015353.

The spelling of 447764549 in words is "four hundred forty-seven million, seven hundred sixty-four thousand, five hundred forty-nine".