85465843 has 2 divisors, whose sum is σ = 85465844. Its totient is φ = 85465842.

The previous prime is 85465823. The next prime is 85465879. The reversal of 85465843 is 34856458.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85465843 - 2¹³ = 85457651 is a prime.

It is equal to p_4969249 and since 85465843 and 4969249 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85465843.

It is not a weakly prime, because it can be changed into another prime (85465823) 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, 42732921 + 42732922.

It is an arithmetic number, because the mean of its divisors is an integer number (42732922).

Almost surely, 2^85465843 is an apocalyptic number.

85465843 is a deficient number, since it is larger than the sum of its proper divisors (1).

85465843 is an equidigital number, since it uses as much as digits as its factorization.

85465843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 460800, while the sum is 43.

The square root of 85465843 is about 9244.7738209217. The cubic root of 85465843 is about 440.4847326641.

The spelling of 85465843 in words is "eighty-five million, four hundred sixty-five thousand, eight hundred forty-three".