445290 has 16 divisors (see below), whose sum is σ = 1068768. Its totient is φ = 118736.

The previous prime is 445283. The next prime is 445297. The reversal of 445290 is 92544.

It is an interprime number because it is at equal distance from previous prime (445283) and next prime (445297).

It is a self number, because there is not a number n which added to its sum of digits gives 445290.

It is not an unprimeable number, because it can be changed into a prime (445297) 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 7 ways as a sum of consecutive naturals, for example, 7392 + ... + 7451.

It is an arithmetic number, because the mean of its divisors is an integer number (66798).

2⁴⁴⁵²⁹⁰ is an apocalyptic number.

445290 is an abundant number, since it is smaller than the sum of its proper divisors (623478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445290 is a wasteful number, since it uses less digits than its factorization.

445290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14853.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 445290 is about 667.3005319944. The cubic root of 445290 is about 76.3626481525.

The spelling of 445290 in words is "four hundred forty-five thousand, two hundred ninety".