442444021308 has 60 divisors (see below), whose sum is σ = 1159011504112. Its totient is φ = 147178451520.

The previous prime is 442444021291. The next prime is 442444021309. The reversal of 442444021308 is 803120444244.

442444021308 is a `hidden beast` number, since 4 + 4 + 244 + 402 + 1 + 3 + 0 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442444021309) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1244233 + ... + 1559808.

Almost surely, 2^442444021308 is an apocalyptic number.

It is an amenable number.

442444021308 is an abundant number, since it is smaller than the sum of its proper divisors (716567482804).

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

442444021308 is a wasteful number, since it uses less digits than its factorization.

442444021308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2804544 (or 2804533 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 36.

The spelling of 442444021308 in words is "four hundred forty-two billion, four hundred forty-four million, twenty-one thousand, three hundred eight".