447957947 has 2 divisors, whose sum is σ = 447957948. Its totient is φ = 447957946.

The previous prime is 447957929. The next prime is 447957977. The reversal of 447957947 is 749759744.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 447957947 - 2⁶ = 447957883 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 447957892 and 447957901.

It is not a weakly prime, because it can be changed into another prime (447957977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223978973 + 223978974.

It is an arithmetic number, because the mean of its divisors is an integer number (223978974).

Almost surely, 2^447957947 is an apocalyptic number.

447957947 is a deficient number, since it is larger than the sum of its proper divisors (1).

447957947 is an equidigital number, since it uses as much as digits as its factorization.

447957947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8890560, while the sum is 56.

The square root of 447957947 is about 21165.0170564543. The cubic root of 447957947 is about 765.1485305458.

It can be divided in two parts, 4479 and 57947, that added together give a palindrome (62426).

The spelling of 447957947 in words is "four hundred forty-seven million, nine hundred fifty-seven thousand, nine hundred forty-seven".