445289 has 4 divisors (see below), whose sum is σ = 479556. Its totient is φ = 411024.

The previous prime is 445283. The next prime is 445297. The reversal of 445289 is 982544.

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

It can be written as a sum of positive squares in 2 ways, for example, as 75625 + 369664 = 275^2 + 608^2 .

It is a cyclic number.

It is not a de Polignac number, because 445289 - 2⁸ = 445033 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17114 + ... + 17139.

It is an arithmetic number, because the mean of its divisors is an integer number (119889).

2⁴⁴⁵²⁸⁹ is an apocalyptic number.

It is an amenable number.

445289 is a deficient number, since it is larger than the sum of its proper divisors (34267).

445289 is a wasteful number, since it uses less digits than its factorization.

445289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34266.

The product of its digits is 11520, while the sum is 32.

The square root of 445289 is about 667.2997827064. The cubic root of 445289 is about 76.3625909893.

The spelling of 445289 in words is "four hundred forty-five thousand, two hundred eighty-nine".