447465569 has 2 divisors, whose sum is σ = 447465570. Its totient is φ = 447465568.

The previous prime is 447465541. The next prime is 447465587. The reversal of 447465569 is 965564744.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 433139344 + 14326225 = 20812^2 + 3785^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-447465569 is a prime.

It is a super-2 number, since 2×447465569² = 400450870880987522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (447465589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223732784 + 223732785.

It is an arithmetic number, because the mean of its divisors is an integer number (223732785).

Almost surely, 2^447465569 is an apocalyptic number.

It is an amenable number.

447465569 is a deficient number, since it is larger than the sum of its proper divisors (1).

447465569 is an equidigital number, since it uses as much as digits as its factorization.

447465569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3628800, while the sum is 50.

The square root of 447465569 is about 21153.3819754667. The cubic root of 447465569 is about 764.8680872411.

The spelling of 447465569 in words is "four hundred forty-seven million, four hundred sixty-five thousand, five hundred sixty-nine".