442444021398 has 48 divisors (see below), whose sum is σ = 1009171874880. Its totient is φ = 139706839152.

The previous prime is 442444021343. The next prime is 442444021399. The reversal of 442444021398 is 893120444244.

442444021398 is a `hidden beast` number, since 4 + 424 + 4 + 4 + 0 + 213 + 9 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442444021399) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4314265 + ... + 4415627.

It is an arithmetic number, because the mean of its divisors is an integer number (21024414060).

Almost surely, 2^442444021398 is an apocalyptic number.

442444021398 is an abundant number, since it is smaller than the sum of its proper divisors (566727853482).

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

442444021398 is a wasteful number, since it uses less digits than its factorization.

442444021398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114153 (or 114150 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 45.

The spelling of 442444021398 in words is "four hundred forty-two billion, four hundred forty-four million, twenty-one thousand, three hundred ninety-eight".