447641 has 2 divisors, whose sum is σ = 447642. Its totient is φ = 447640.

The previous prime is 447637. The next prime is 447677. The reversal of 447641 is 146744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 270400 + 177241 = 520^2 + 421^2 .

It is a cyclic number.

It is not a de Polignac number, because 447641 - 2² = 447637 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 447641.

It is not a weakly prime, because it can be changed into another prime (447611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223820 + 223821.

It is an arithmetic number, because the mean of its divisors is an integer number (223821).

2⁴⁴⁷⁶⁴¹ is an apocalyptic number.

It is an amenable number.

447641 is a deficient number, since it is larger than the sum of its proper divisors (1).

447641 is an equidigital number, since it uses as much as digits as its factorization.

447641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 26.

The square root of 447641 is about 669.0597880608. The cubic root of 447641 is about 76.4968030902.

The spelling of 447641 in words is "four hundred forty-seven thousand, six hundred forty-one".