445090 has 16 divisors (see below), whose sum is σ = 819072. Its totient is φ = 174064.

The previous prime is 445087. The next prime is 445091. The reversal of 445090 is 90544.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (445091) 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, 4 + ... + 943.

It is an arithmetic number, because the mean of its divisors is an integer number (51192).

2⁴⁴⁵⁰⁹⁰ is an apocalyptic number.

445090 is a deficient number, since it is larger than the sum of its proper divisors (373982).

445090 is a wasteful number, since it uses less digits than its factorization.

445090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 445090 is about 667.1506576479. The cubic root of 445090 is about 76.3512137939.

The spelling of 445090 in words is "four hundred forty-five thousand, ninety".