85949719 has 2 divisors, whose sum is σ = 85949720. Its totient is φ = 85949718.

The previous prime is 85949713. The next prime is 85949741. The reversal of 85949719 is 91794958.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85949719 - 2⁹ = 85949207 is a prime.

It is a super-2 number, since 2×85949719² = 14774708392357922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85949713) 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, 42974859 + 42974860.

It is an arithmetic number, because the mean of its divisors is an integer number (42974860).

Almost surely, 2^85949719 is an apocalyptic number.

85949719 is a deficient number, since it is larger than the sum of its proper divisors (1).

85949719 is an equidigital number, since it uses as much as digits as its factorization.

85949719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 52.

The square root of 85949719 is about 9270.9071292943. The cubic root of 85949719 is about 441.3144559919.

It can be divided in two parts, 85949 and 719, that added together give a palindrome (86668).

The spelling of 85949719 in words is "eighty-five million, nine hundred forty-nine thousand, seven hundred nineteen".