385904883839 has 4 divisors (see below), whose sum is σ = 385961716560. Its totient is φ = 385848051120.

The previous prime is 385904883797. The next prime is 385904883851. The reversal of 385904883839 is 938388409583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 938388409583 = 4723 ⋅198684821.

It is a cyclic number.

It is not a de Polignac number, because 385904883839 - 2²⁰ = 385903835263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385904183839) 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, 28406174 + ... + 28419755.

It is an arithmetic number, because the mean of its divisors is an integer number (96490429140).

Almost surely, 2^385904883839 is an apocalyptic number.

385904883839 is a deficient number, since it is larger than the sum of its proper divisors (56832721).

385904883839 is an equidigital number, since it uses as much as digits as its factorization.

385904883839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56832720.

The product of its (nonzero) digits is 179159040, while the sum is 68.

The spelling of 385904883839 in words is "three hundred eighty-five billion, nine hundred four million, eight hundred eighty-three thousand, eight hundred thirty-nine".