85405319 has 8 divisors (see below), whose sum is σ = 89028720. Its totient is φ = 81827200.

The previous prime is 85405301. The next prime is 85405349. The reversal of 85405319 is 91350458.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85405319 is a prime.

It is a super-2 number, since 2×85405319² = 14588137026983522, 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 (85405349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7442 + ... + 15039.

It is an arithmetic number, because the mean of its divisors is an integer number (11128590).

Almost surely, 2^85405319 is an apocalyptic number.

85405319 is a deficient number, since it is larger than the sum of its proper divisors (3623401).

85405319 is a wasteful number, since it uses less digits than its factorization.

85405319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22641.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 85405319 is about 9241.4998241627. The cubic root of 85405319 is about 440.3807293465.

The spelling of 85405319 in words is "eighty-five million, four hundred five thousand, three hundred nineteen".