478697869839 has 32 divisors (see below), whose sum is σ = 761435320320. Its totient is φ = 261743328000.

The previous prime is 478697869831. The next prime is 478697869861. The reversal of 478697869839 is 938968796874.

It is not a de Polignac number, because 478697869839 - 2³ = 478697869831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478697869831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4073112 + ... + 4188989.

It is an arithmetic number, because the mean of its divisors is an integer number (23794853760).

Almost surely, 2^478697869839 is an apocalyptic number.

478697869839 is a deficient number, since it is larger than the sum of its proper divisors (282737450481).

478697869839 is a wasteful number, since it uses less digits than its factorization.

478697869839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8262231.

The product of its digits is 7900913664, while the sum is 84.

The spelling of 478697869839 in words is "four hundred seventy-eight billion, six hundred ninety-seven million, eight hundred sixty-nine thousand, eight hundred thirty-nine".