447689 has 4 divisors (see below), whose sum is σ = 488400. Its totient is φ = 406980.

The previous prime is 447683. The next prime is 447701. The reversal of 447689 is 986744.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-447689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (447683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20339 + ... + 20360.

It is an arithmetic number, because the mean of its divisors is an integer number (122100).

2⁴⁴⁷⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

447689 is a deficient number, since it is larger than the sum of its proper divisors (40711).

447689 is a wasteful number, since it uses less digits than its factorization.

447689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40710.

The product of its digits is 48384, while the sum is 38.

The square root of 447689 is about 669.0956583329. The cubic root of 447689 is about 76.4995372122.

The spelling of 447689 in words is "four hundred forty-seven thousand, six hundred eighty-nine".