447998 has 4 divisors (see below), whose sum is σ = 672000. Its totient is φ = 223998.

The previous prime is 447991. The next prime is 448003. The reversal of 447998 is 899744.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447991) by changing a digit.

447998 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111998 + ... + 112001.

It is an arithmetic number, because the mean of its divisors is an integer number (168000).

2⁴⁴⁷⁹⁹⁸ is an apocalyptic number.

447998 is a deficient number, since it is larger than the sum of its proper divisors (224002).

447998 is a wasteful number, since it uses less digits than its factorization.

447998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224001.

The product of its digits is 72576, while the sum is 41.

The square root of 447998 is about 669.3265271898. The cubic root of 447998 is about 76.5171334458.

The spelling of 447998 in words is "four hundred forty-seven thousand, nine hundred ninety-eight".