85318829 has 2 divisors, whose sum is σ = 85318830. Its totient is φ = 85318828.

The previous prime is 85318819. The next prime is 85318861. The reversal of 85318829 is 92881358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46854025 + 38464804 = 6845^2 + 6202^2 .

It is a cyclic number.

It is not a de Polignac number, because 85318829 - 2⁴ = 85318813 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85318829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85318819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42659414 + 42659415.

It is an arithmetic number, because the mean of its divisors is an integer number (42659415).

Almost surely, 2^85318829 is an apocalyptic number.

It is an amenable number.

85318829 is a deficient number, since it is larger than the sum of its proper divisors (1).

85318829 is an equidigital number, since it uses as much as digits as its factorization.

85318829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 44.

The square root of 85318829 is about 9236.8192036003. The cubic root of 85318829 is about 440.2320212239.

The spelling of 85318829 in words is "eighty-five million, three hundred eighteen thousand, eight hundred twenty-nine".