384804878839 has 2 divisors, whose sum is σ = 384804878840. Its totient is φ = 384804878838.

The previous prime is 384804878803. The next prime is 384804878863. The reversal of 384804878839 is 938878408483.

It is a strong prime.

It is an emirp because it is prime and its reverse (938878408483) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-384804878839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (384804873839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192402439419 + 192402439420.

It is an arithmetic number, because the mean of its divisors is an integer number (192402439420).

Almost surely, 2^384804878839 is an apocalyptic number.

384804878839 is a deficient number, since it is larger than the sum of its proper divisors (1).

384804878839 is an equidigital number, since it uses as much as digits as its factorization.

384804878839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 297271296, while the sum is 70.

The spelling of 384804878839 in words is "three hundred eighty-four billion, eight hundred four million, eight hundred seventy-eight thousand, eight hundred thirty-nine".