85359909 has 16 divisors (see below), whose sum is σ = 117270720. Its totient is φ = 55194240.

The previous prime is 85359893. The next prime is 85359917. The reversal of 85359909 is 90995358.

It is not a de Polignac number, because 85359909 - 2⁴ = 85359893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85359919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20079 + ... + 23955.

It is an arithmetic number, because the mean of its divisors is an integer number (7329420).

Almost surely, 2^85359909 is an apocalyptic number.

It is an amenable number.

85359909 is a deficient number, since it is larger than the sum of its proper divisors (31910811).

85359909 is a wasteful number, since it uses less digits than its factorization.

85359909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4100.

The product of its (nonzero) digits is 437400, while the sum is 48.

The square root of 85359909 is about 9239.0426452095. The cubic root of 85359909 is about 440.3026653786.

It can be divided in two parts, 85359 and 909, that added together give a palindrome (86268).

The spelling of 85359909 in words is "eighty-five million, three hundred fifty-nine thousand, nine hundred nine".