445489 has 4 divisors (see below), whose sum is σ = 486000. Its totient is φ = 404980.

The previous prime is 445477. The next prime is 445499. The reversal of 445489 is 984544.

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-445489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445499) 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, 20239 + ... + 20260.

It is an arithmetic number, because the mean of its divisors is an integer number (121500).

2⁴⁴⁵⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

445489 is a deficient number, since it is larger than the sum of its proper divisors (40511).

445489 is a wasteful number, since it uses less digits than its factorization.

445489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40510.

The product of its digits is 23040, while the sum is 34.

The square root of 445489 is about 667.4496235672. The cubic root of 445489 is about 76.3740219418.

The spelling of 445489 in words is "four hundred forty-five thousand, four hundred eighty-nine".