85822879 has 2 divisors, whose sum is σ = 85822880. Its totient is φ = 85822878.

The previous prime is 85822873. The next prime is 85822897. The reversal of 85822879 is 97822858.

Together with next prime (85822897) 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 85822879 - 2³ = 85822871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85822871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42911439 + 42911440.

It is an arithmetic number, because the mean of its divisors is an integer number (42911440).

Almost surely, 2^85822879 is an apocalyptic number.

85822879 is a deficient number, since it is larger than the sum of its proper divisors (1).

85822879 is an equidigital number, since it uses as much as digits as its factorization.

85822879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 49.

The square root of 85822879 is about 9264.0638490891. The cubic root of 85822879 is about 441.0972596881.

The spelling of 85822879 in words is "eighty-five million, eight hundred twenty-two thousand, eight hundred seventy-nine".