447697147 has 2 divisors, whose sum is σ = 447697148. Its totient is φ = 447697146.

The previous prime is 447697111. The next prime is 447697169. The reversal of 447697147 is 741796744.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-447697147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 447697147.

It is not a weakly prime, because it can be changed into another prime (447694147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223848573 + 223848574.

It is an arithmetic number, because the mean of its divisors is an integer number (223848574).

Almost surely, 2^447697147 is an apocalyptic number.

447697147 is a deficient number, since it is larger than the sum of its proper divisors (1).

447697147 is an equidigital number, since it uses as much as digits as its factorization.

447697147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1185408, while the sum is 49.

The square root of 447697147 is about 21158.8550493641. The cubic root of 447697147 is about 765.0000125308. Note that the first 4 decimals are identical.

The spelling of 447697147 in words is "four hundred forty-seven million, six hundred ninety-seven thousand, one hundred forty-seven".