79867 has 2 divisors, whose sum is σ = 79868. Its totient is φ = 79866.

The previous prime is 79861. The next prime is 79873. The reversal of 79867 is 76897.

It is a balanced prime because it is at equal distance from previous prime (79861) and next prime (79873).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79867 is a prime.

It is not a weakly prime, because it can be changed into another prime (79861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39933 + 39934.

It is an arithmetic number, because the mean of its divisors is an integer number (39934).

2⁷⁹⁸⁶⁷ is an apocalyptic number.

79867 is a deficient number, since it is larger than the sum of its proper divisors (1).

79867 is an equidigital number, since it uses as much as digits as its factorization.

79867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 37.

The square root of 79867 is about 282.6075016697. The cubic root of 79867 is about 43.0648022380.

It can be divided in two parts, 79 and 867, that added together give a triangular number (946 = T₄₃).

The spelling of 79867 in words is "seventy-nine thousand, eight hundred sixty-seven".