445549 has 4 divisors (see below), whose sum is σ = 479836. Its totient is φ = 411264.

The previous prime is 445541. The next prime is 445567. The reversal of 445549 is 945544.

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 243049 + 202500 = 493^2 + 450^2 .

It is a cyclic number.

It is not a de Polignac number, because 445549 - 2³ = 445541 is a prime.

It is a super-2 number, since 2×445549² = 397027822802, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 445549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445541) 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, 17124 + ... + 17149.

It is an arithmetic number, because the mean of its divisors is an integer number (119959).

2⁴⁴⁵⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

445549 is a deficient number, since it is larger than the sum of its proper divisors (34287).

445549 is a wasteful number, since it uses less digits than its factorization.

445549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34286.

The product of its digits is 14400, while the sum is 31.

The square root of 445549 is about 667.4945692663. The cubic root of 445549 is about 76.3774505604.

The spelling of 445549 in words is "four hundred forty-five thousand, five hundred forty-nine".