445406 has 16 divisors (see below), whose sum is σ = 740544. Its totient is φ = 199584.

The previous prime is 445363. The next prime is 445427. The reversal of 445406 is 604544.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 731 + ... + 1193.

It is an arithmetic number, because the mean of its divisors is an integer number (46284).

2⁴⁴⁵⁴⁰⁶ is an apocalyptic number.

445406 is a deficient number, since it is larger than the sum of its proper divisors (295138).

445406 is a wasteful number, since it uses less digits than its factorization.

445406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 445406 is about 667.3874436937. The cubic root of 445406 is about 76.3692785119.

The spelling of 445406 in words is "four hundred forty-five thousand, four hundred six".