447117689 has 2 divisors, whose sum is σ = 447117690. Its totient is φ = 447117688.

The previous prime is 447117667. The next prime is 447117757. The reversal of 447117689 is 986711744.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 446899600 + 218089 = 21140^2 + 467^2 .

It is a cyclic number.

It is not a de Polignac number, because 447117689 - 2¹² = 447113593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (447117659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223558844 + 223558845.

It is an arithmetic number, because the mean of its divisors is an integer number (223558845).

Almost surely, 2^447117689 is an apocalyptic number.

It is an amenable number.

447117689 is a deficient number, since it is larger than the sum of its proper divisors (1).

447117689 is an equidigital number, since it uses as much as digits as its factorization.

447117689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 47.

The square root of 447117689 is about 21145.1575780366. The cubic root of 447117689 is about 764.6698214875.

The spelling of 447117689 in words is "four hundred forty-seven million, one hundred seventeen thousand, six hundred eighty-nine".