444163266 has 24 divisors (see below), whose sum is σ = 1013004720. Its totient is φ = 140261976.

The previous prime is 444163259. The next prime is 444163271. The reversal of 444163266 is 662361444.

It is a self number, because there is not a number n which added to its sum of digits gives 444163266.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 649020 + ... + 649703.

It is an arithmetic number, because the mean of its divisors is an integer number (42208530).

Almost surely, 2^444163266 is an apocalyptic number.

444163266 is an abundant number, since it is smaller than the sum of its proper divisors (568841454).

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

444163266 is a wasteful number, since it uses less digits than its factorization.

444163266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298750 (or 1298747 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 444163266 is about 21075.1812803591. The cubic root of 444163266 is about 762.9818599334.

The spelling of 444163266 in words is "four hundred forty-four million, one hundred sixty-three thousand, two hundred sixty-six".