442581027979 has 4 divisors (see below), whose sum is σ = 453375687240. Its totient is φ = 431786368720.

The previous prime is 442581027913. The next prime is 442581028013. The reversal of 442581027979 is 979720185244.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 442581027979 - 2⁷ = 442581027851 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442581025979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5397329569 + ... + 5397329650.

It is an arithmetic number, because the mean of its divisors is an integer number (113343921810).

Almost surely, 2^442581027979 is an apocalyptic number.

442581027979 is a deficient number, since it is larger than the sum of its proper divisors (10794659261).

442581027979 is a wasteful number, since it uses less digits than its factorization.

442581027979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10794659260.

The product of its (nonzero) digits is 10160640, while the sum is 58.

The spelling of 442581027979 in words is "four hundred forty-two billion, five hundred eighty-one million, twenty-seven thousand, nine hundred seventy-nine".