85403827 has 2 divisors, whose sum is σ = 85403828. Its totient is φ = 85403826.

The previous prime is 85403797. The next prime is 85403833. The reversal of 85403827 is 72830458.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85403827 is a prime.

It is not a weakly prime, because it can be changed into another prime (85403887) 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, 42701913 + 42701914.

It is an arithmetic number, because the mean of its divisors is an integer number (42701914).

Almost surely, 2^85403827 is an apocalyptic number.

85403827 is a deficient number, since it is larger than the sum of its proper divisors (1).

85403827 is an equidigital number, since it uses as much as digits as its factorization.

85403827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 85403827 is about 9241.4191009823. The cubic root of 85403827 is about 440.3781649009.

The spelling of 85403827 in words is "eighty-five million, four hundred three thousand, eight hundred twenty-seven".