823859879 has 2 divisors, whose sum is σ = 823859880. Its totient is φ = 823859878.

The previous prime is 823859867. The next prime is 823859887. The reversal of 823859879 is 978958328.

823859879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 823859879 - 2⁸ = 823859623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (823859809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411929939 + 411929940.

It is an arithmetic number, because the mean of its divisors is an integer number (411929940).

Almost surely, 2^823859879 is an apocalyptic number.

823859879 is a deficient number, since it is larger than the sum of its proper divisors (1).

823859879 is an equidigital number, since it uses as much as digits as its factorization.

823859879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8709120, while the sum is 59.

The square root of 823859879 is about 28702.9594118795. The cubic root of 823859879 is about 937.4564854232.

The spelling of 823859879 in words is "eight hundred twenty-three million, eight hundred fifty-nine thousand, eight hundred seventy-nine".