447886418979 has 4 divisors (see below), whose sum is σ = 597181891976. Its totient is φ = 298590945984.

The previous prime is 447886418977. The next prime is 447886419049. The reversal of 447886418979 is 979814688744.

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

It is not a de Polignac number, because 447886418979 - 2¹ = 447886418977 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 447886418979.

It is not an unprimeable number, because it can be changed into a prime (447886418977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74647736494 + ... + 74647736499.

It is an arithmetic number, because the mean of its divisors is an integer number (149295472994).

Almost surely, 2^447886418979 is an apocalyptic number.

447886418979 is a deficient number, since it is larger than the sum of its proper divisors (149295472997).

447886418979 is a wasteful number, since it uses less digits than its factorization.

447886418979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149295472996.

The product of its digits is 780337152, while the sum is 75.

The spelling of 447886418979 in words is "four hundred forty-seven billion, eight hundred eighty-six million, four hundred eighteen thousand, nine hundred seventy-nine".