447889 has 8 divisors (see below), whose sum is σ = 487872. Its totient is φ = 408720.

The previous prime is 447883. The next prime is 447893. The reversal of 447889 is 988744.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 447889 - 2¹³ = 439697 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (447883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1572 + ... + 1834.

It is an arithmetic number, because the mean of its divisors is an integer number (60984).

2⁴⁴⁷⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

447889 is a deficient number, since it is larger than the sum of its proper divisors (39983).

447889 is a wasteful number, since it uses less digits than its factorization.

447889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407.

The product of its digits is 64512, while the sum is 40.

The square root of 447889 is about 669.2450971057. The cubic root of 447889 is about 76.5109272841.

The spelling of 447889 in words is "four hundred forty-seven thousand, eight hundred eighty-nine".