445121406 has 40 divisors (see below), whose sum is σ = 1031805720. Its totient is φ = 143255952.

The previous prime is 445121399. The next prime is 445121431. The reversal of 445121406 is 604121544.

445121406 is a `hidden beast` number, since 4 + 4 + 512 + 140 + 6 = 666.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 445121406.

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 19 ways as a sum of consecutive naturals, for example, 42676 + ... + 52071.

It is an arithmetic number, because the mean of its divisors is an integer number (25795143).

Almost surely, 2^445121406 is an apocalyptic number.

445121406 is an abundant number, since it is smaller than the sum of its proper divisors (586684314).

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

445121406 is a wasteful number, since it uses less digits than its factorization.

445121406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94790 (or 94781 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 445121406 is about 21097.9005116623. The cubic root of 445121406 is about 763.5300955788.

The spelling of 445121406 in words is "four hundred forty-five million, one hundred twenty-one thousand, four hundred six".