85853409 has 8 divisors (see below), whose sum is σ = 115200960. Its totient is φ = 56870736.

The previous prime is 85853407. The next prime is 85853423. The reversal of 85853409 is 90435858.

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

It is not a de Polignac number, because 85853409 - 2¹ = 85853407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85853401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90669 + ... + 91610.

It is an arithmetic number, because the mean of its divisors is an integer number (14400120).

Almost surely, 2^85853409 is an apocalyptic number.

It is an amenable number.

85853409 is a deficient number, since it is larger than the sum of its proper divisors (29347551).

85853409 is a wasteful number, since it uses less digits than its factorization.

85853409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182439.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 85853409 is about 9265.7114675561. The cubic root of 85853409 is about 441.1495577193.

The spelling of 85853409 in words is "eighty-five million, eight hundred fifty-three thousand, four hundred nine".