85009319 has 2 divisors, whose sum is σ = 85009320. Its totient is φ = 85009318.

The previous prime is 85009307. The next prime is 85009339. The reversal of 85009319 is 91390058.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85009319 - 2¹⁶ = 84943783 is a prime.

It is a super-2 number, since 2×85009319² = 14453168633687522, which contains 22 as substring.

It is a Chen prime.

It is equal to p_4944239 and since 85009319 and 4944239 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85009339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42504659 + 42504660.

It is an arithmetic number, because the mean of its divisors is an integer number (42504660).

Almost surely, 2^85009319 is an apocalyptic number.

85009319 is a deficient number, since it is larger than the sum of its proper divisors (1).

85009319 is an equidigital number, since it uses as much as digits as its factorization.

85009319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 85009319 is about 9220.0498371755. The cubic root of 85009319 is about 439.6990348858.

The spelling of 85009319 in words is "eighty-five million, nine thousand, three hundred nineteen".