442350823679 has 16 divisors (see below), whose sum is σ = 496547271936. Its totient is φ = 392010969600.

The previous prime is 442350823669. The next prime is 442350823693. The reversal of 442350823679 is 976328053244.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-442350823679 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442350823679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442350823619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11323412 + ... + 11362409.

It is an arithmetic number, because the mean of its divisors is an integer number (31034204496).

Almost surely, 2^442350823679 is an apocalyptic number.

442350823679 is a deficient number, since it is larger than the sum of its proper divisors (54196448257).

442350823679 is a wasteful number, since it uses less digits than its factorization.

442350823679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22685906.

The product of its (nonzero) digits is 8709120, while the sum is 53.

The spelling of 442350823679 in words is "four hundred forty-two billion, three hundred fifty million, eight hundred twenty-three thousand, six hundred seventy-nine".