85320419 has 2 divisors, whose sum is σ = 85320420. Its totient is φ = 85320418.

The previous prime is 85320377. The next prime is 85320421. The reversal of 85320419 is 91402358.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85320419 - 2⁸ = 85320163 is a prime.

It is a super-2 number, since 2×85320419² = 14559147796671122, which contains 22 as substring.

Together with 85320421, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85320019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42660209 + 42660210.

It is an arithmetic number, because the mean of its divisors is an integer number (42660210).

Almost surely, 2^85320419 is an apocalyptic number.

85320419 is a deficient number, since it is larger than the sum of its proper divisors (1).

85320419 is an equidigital number, since it uses as much as digits as its factorization.

85320419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 85320419 is about 9236.9052717888. The cubic root of 85320419 is about 440.2347559253.

The spelling of 85320419 in words is "eighty-five million, three hundred twenty thousand, four hundred nineteen".