85085919 has 6 divisors (see below), whose sum is σ = 122901896. Its totient is φ = 56723940.

The previous prime is 85085909. The next prime is 85085929. The reversal of 85085919 is 91958058.

85085919 is a `hidden beast` number, since 8 + 50 + 8 + 591 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (85085909) and next prime (85085929).

It is not a de Polignac number, because 85085919 - 2⁵ = 85085887 is a prime.

It is a super-2 number, since 2×85085919² = 14479227224149122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85085909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4726987 + ... + 4727004.

Almost surely, 2^85085919 is an apocalyptic number.

85085919 is a deficient number, since it is larger than the sum of its proper divisors (37815977).

85085919 is a wasteful number, since it uses less digits than its factorization.

85085919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9453997 (or 9453994 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 45.

The square root of 85085919 is about 9224.2028923913. The cubic root of 85085919 is about 439.8310629001.

The spelling of 85085919 in words is "eighty-five million, eighty-five thousand, nine hundred nineteen".