445446 has 32 divisors (see below), whose sum is σ = 1012320. Its totient is φ = 145152.

The previous prime is 445433. The next prime is 445447. The reversal of 445446 is 644544.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 445446.

It is not an unprimeable number, because it can be changed into a prime (445447) by changing a digit.

445446 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3886 + ... + 3998.

It is an arithmetic number, because the mean of its divisors is an integer number (31635).

2⁴⁴⁵⁴⁴⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (506160).

445446 is an abundant number, since it is smaller than the sum of its proper divisors (566874).

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

445446 is a wasteful number, since it uses less digits than its factorization.

445446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 191 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 445446 is about 667.4174106210. The cubic root of 445446 is about 76.3715645757.

The spelling of 445446 in words is "four hundred forty-five thousand, four hundred forty-six".