85473719 has 2 divisors, whose sum is σ = 85473720. Its totient is φ = 85473718.

The previous prime is 85473691. The next prime is 85473721. The reversal of 85473719 is 91737458.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85473719 - 2²⁴ = 68696503 is a prime.

It is a super-2 number, since 2×85473719² = 14611513279381922, which contains 22 as substring.

Together with 85473721, it forms a pair of twin primes.

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 85473719.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85473319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42736859 + 42736860.

It is an arithmetic number, because the mean of its divisors is an integer number (42736860).

Almost surely, 2^85473719 is an apocalyptic number.

85473719 is a deficient number, since it is larger than the sum of its proper divisors (1).

85473719 is an equidigital number, since it uses as much as digits as its factorization.

85473719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 44.

The square root of 85473719 is about 9245.1997815082. The cubic root of 85473719 is about 440.4982630253.

The spelling of 85473719 in words is "eighty-five million, four hundred seventy-three thousand, seven hundred nineteen".