444865146 has 64 divisors (see below), whose sum is σ = 1047240576. Its totient is φ = 124467200.

The previous prime is 444865117. The next prime is 444865151. The reversal of 444865146 is 641568444.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 444865098 and 444865107.

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 31 ways as a sum of consecutive naturals, for example, 55726 + ... + 63206.

It is an arithmetic number, because the mean of its divisors is an integer number (16363134).

Almost surely, 2^444865146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 444865146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (523620288).

444865146 is an abundant number, since it is smaller than the sum of its proper divisors (602375430).

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

444865146 is a wasteful number, since it uses less digits than its factorization.

444865146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7567.

The product of its digits is 368640, while the sum is 42.

The square root of 444865146 is about 21091.8265211906. The cubic root of 444865146 is about 763.3835439640.

The spelling of 444865146 in words is "four hundred forty-four million, eight hundred sixty-five thousand, one hundred forty-six".