445099 has 4 divisors (see below), whose sum is σ = 451440. Its totient is φ = 438760.

The previous prime is 445097. The next prime is 445103. The reversal of 445099 is 990544.

It is a happy number.

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 445099 - 2¹ = 445097 is a prime.

It is a super-2 number, since 2×445099² = 396226239602, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

445099 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 445099.

It is not an unprimeable number, because it can be changed into a prime (445091) 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, 3064 + ... + 3205.

It is an arithmetic number, because the mean of its divisors is an integer number (112860).

2⁴⁴⁵⁰⁹⁹ is an apocalyptic number.

445099 is a deficient number, since it is larger than the sum of its proper divisors (6341).

445099 is an equidigital number, since it uses as much as digits as its factorization.

445099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6340.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 445099 is about 667.1574027169. The cubic root of 445099 is about 76.3517284136.

The spelling of 445099 in words is "four hundred forty-five thousand, ninety-nine".