384779 has 2 divisors, whose sum is σ = 384780. Its totient is φ = 384778.

The previous prime is 384773. The next prime is 384817. The reversal of 384779 is 977483.

It is an a-pointer prime, because the next prime (384817) can be obtained adding 384779 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-384779 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (384773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192389 + 192390.

It is an arithmetic number, because the mean of its divisors is an integer number (192390).

2³⁸⁴⁷⁷⁹ is an apocalyptic number.

384779 is a deficient number, since it is larger than the sum of its proper divisors (1).

384779 is an equidigital number, since it uses as much as digits as its factorization.

384779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 38.

The square root of 384779 is about 620.3055698605. The cubic root of 384779 is about 72.7339411026.

Subtracting 384779 from its reverse (977483), we obtain a cube (592704 = 84³).

The spelling of 384779 in words is "three hundred eighty-four thousand, seven hundred seventy-nine".