85806899 has 2 divisors, whose sum is σ = 85806900. Its totient is φ = 85806898.

The previous prime is 85806893. The next prime is 85806943. The reversal of 85806899 is 99860858.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85806899 - 2⁴ = 85806883 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 85806899.

It is not a weakly prime, because it can be changed into another prime (85806893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42903449 + 42903450.

It is an arithmetic number, because the mean of its divisors is an integer number (42903450).

Almost surely, 2^85806899 is an apocalyptic number.

85806899 is a deficient number, since it is larger than the sum of its proper divisors (1).

85806899 is an equidigital number, since it uses as much as digits as its factorization.

85806899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1244160, while the sum is 53.

The square root of 85806899 is about 9263.2013364711. The cubic root of 85806899 is about 441.0698809292.

The spelling of 85806899 in words is "eighty-five million, eight hundred six thousand, eight hundred ninety-nine".