447647479 has 2 divisors, whose sum is σ = 447647480. Its totient is φ = 447647478.

The previous prime is 447647477. The next prime is 447647521. The reversal of 447647479 is 974746744.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 447647479 - 2¹ = 447647477 is a prime.

Together with 447647477, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (447647477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223823739 + 223823740.

It is an arithmetic number, because the mean of its divisors is an integer number (223823740).

Almost surely, 2^447647479 is an apocalyptic number.

447647479 is a deficient number, since it is larger than the sum of its proper divisors (1).

447647479 is an equidigital number, since it uses as much as digits as its factorization.

447647479 is an odious number, because the sum of its binary digits is odd.

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

The square root of 447647479 is about 21157.6813238124. The cubic root of 447647479 is about 764.9717215115.

The spelling of 447647479 in words is "four hundred forty-seven million, six hundred forty-seven thousand, four hundred seventy-nine".