447764497 has 4 divisors (see below), whose sum is σ = 450238516. Its totient is φ = 445290480.

The previous prime is 447764459. The next prime is 447764501. The reversal of 447764497 is 794467744.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 139972561 + 307791936 = 11831^2 + 17544^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-447764497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (447764297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1236738 + ... + 1237099.

It is an arithmetic number, because the mean of its divisors is an integer number (112559629).

Almost surely, 2^447764497 is an apocalyptic number.

It is an amenable number.

447764497 is a deficient number, since it is larger than the sum of its proper divisors (2474019).

447764497 is a wasteful number, since it uses less digits than its factorization.

447764497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2474018.

The product of its digits is 4741632, while the sum is 52.

The square root of 447764497 is about 21160.4465217537. The cubic root of 447764497 is about 765.0383719201.

The spelling of 447764497 in words is "four hundred forty-seven million, seven hundred sixty-four thousand, four hundred ninety-seven".