447999 has 4 divisors (see below), whose sum is σ = 597336. Its totient is φ = 298664.

The previous prime is 447991. The next prime is 448003. The reversal of 447999 is 999744.

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

It is a cyclic number.

It is not a de Polignac number, because 447999 - 2³ = 447991 is a prime.

It is a D-number.

447999 is a modest number, since divided by 999 gives 447 as remainder.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 447999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447991) 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, 74664 + ... + 74669.

It is an arithmetic number, because the mean of its divisors is an integer number (149334).

2⁴⁴⁷⁹⁹⁹ is an apocalyptic number.

447999 is a deficient number, since it is larger than the sum of its proper divisors (149337).

447999 is a wasteful number, since it uses less digits than its factorization.

447999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149336.

The product of its digits is 81648, while the sum is 42.

The square root of 447999 is about 669.3272742090. The cubic root of 447999 is about 76.5171903784.

The spelling of 447999 in words is "four hundred forty-seven thousand, nine hundred ninety-nine".