78079 has 2 divisors, whose sum is σ = 78080. Its totient is φ = 78078.

The previous prime is 78059. The next prime is 78101. The reversal of 78079 is 97087.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78079 - 2⁷ = 77951 is a prime.

78079 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 78079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39039 + 39040.

It is an arithmetic number, because the mean of its divisors is an integer number (39040).

2⁷⁸⁰⁷⁹ is an apocalyptic number.

78079 is a deficient number, since it is larger than the sum of its proper divisors (1).

78079 is an equidigital number, since it uses as much as digits as its factorization.

78079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 78079 is about 279.4261977696. The cubic root of 78079 is about 42.7410067377.

The spelling of 78079 in words is "seventy-eight thousand, seventy-nine".