444442446 has 72 divisors (see below), whose sum is σ = 1150535880. Its totient is φ = 123542496.

The previous prime is 444442417. The next prime is 444442489. The reversal of 444442446 is 644244444.

It is a self number, because there is not a number n which added to its sum of digits gives 444442446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25825 + ... + 39443.

It is an arithmetic number, because the mean of its divisors is an integer number (15979665).

Almost surely, 2^444442446 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 444442446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (575267940).

444442446 is an abundant number, since it is smaller than the sum of its proper divisors (706093434).

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

444442446 is a wasteful number, since it uses less digits than its factorization.

444442446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13678 (or 13668 counting only the distinct ones).

The product of its digits is 196608, while the sum is 36.

The square root of 444442446 is about 21081.8036704643. The cubic root of 444442446 is about 763.1416845433.

The spelling of 444442446 in words is "four hundred forty-four million, four hundred forty-two thousand, four hundred forty-six".