85814999 has 2 divisors, whose sum is σ = 85815000. Its totient is φ = 85814998.

The previous prime is 85814977. The next prime is 85815011. The reversal of 85814999 is 99941858.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85814999 - 2¹² = 85810903 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85814999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85814899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42907499 + 42907500.

It is an arithmetic number, because the mean of its divisors is an integer number (42907500).

Almost surely, 2^85814999 is an apocalyptic number.

85814999 is a deficient number, since it is larger than the sum of its proper divisors (1).

85814999 is an equidigital number, since it uses as much as digits as its factorization.

85814999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 53.

The square root of 85814999 is about 9263.6385400122. The cubic root of 85814999 is about 441.0837591980.

The spelling of 85814999 in words is "eighty-five million, eight hundred fourteen thousand, nine hundred ninety-nine".