85719079 has 2 divisors, whose sum is σ = 85719080. Its totient is φ = 85719078.

The previous prime is 85719077. The next prime is 85719097. The reversal of 85719079 is 97091758.

Together with next prime (85719097) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85719079 - 2¹ = 85719077 is a prime.

Together with 85719077, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85719077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42859539 + 42859540.

It is an arithmetic number, because the mean of its divisors is an integer number (42859540).

Almost surely, 2^85719079 is an apocalyptic number.

85719079 is a deficient number, since it is larger than the sum of its proper divisors (1).

85719079 is an equidigital number, since it uses as much as digits as its factorization.

85719079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 46.

The square root of 85719079 is about 9258.4598611216. The cubic root of 85719079 is about 440.9193569837.

The spelling of 85719079 in words is "eighty-five million, seven hundred nineteen thousand, seventy-nine".