83822857 has 2 divisors, whose sum is σ = 83822858. Its totient is φ = 83822856.

The previous prime is 83822803. The next prime is 83822861. The reversal of 83822857 is 75822838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63536841 + 20286016 = 7971^2 + 4504^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83822857 is a prime.

It is not a weakly prime, because it can be changed into another prime (83822957) 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, 41911428 + 41911429.

It is an arithmetic number, because the mean of its divisors is an integer number (41911429).

Almost surely, 2^83822857 is an apocalyptic number.

It is an amenable number.

83822857 is a deficient number, since it is larger than the sum of its proper divisors (1).

83822857 is an equidigital number, since it uses as much as digits as its factorization.

83822857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 215040, while the sum is 43.

The square root of 83822857 is about 9155.4823466598. The cubic root of 83822857 is about 437.6438397241.

The spelling of 83822857 in words is "eighty-three million, eight hundred twenty-two thousand, eight hundred fifty-seven".