445423164 has 12 divisors (see below), whose sum is σ = 1039320744. Its totient is φ = 148474384.

The previous prime is 445423117. The next prime is 445423201. The reversal of 445423164 is 461324544.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18559287 + ... + 18559310.

It is an arithmetic number, because the mean of its divisors is an integer number (86610062).

Almost surely, 2^445423164 is an apocalyptic number.

It is an amenable number.

445423164 is an abundant number, since it is smaller than the sum of its proper divisors (593897580).

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

445423164 is a wasteful number, since it uses less digits than its factorization.

445423164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37118604 (or 37118602 counting only the distinct ones).

The product of its digits is 46080, while the sum is 33.

The square root of 445423164 is about 21105.0506751346. The cubic root of 445423164 is about 763.7025947863.

The spelling of 445423164 in words is "four hundred forty-five million, four hundred twenty-three thousand, one hundred sixty-four".