85809358 has 16 divisors (see below), whose sum is σ = 135893520. Its totient is φ = 40525056.

The previous prime is 85809341. The next prime is 85809359. The reversal of 85809358 is 85390858.

It is a zygodrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85809359) 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, 10216 + ... + 16612.

It is an arithmetic number, because the mean of its divisors is an integer number (8493345).

Almost surely, 2^85809358 is an apocalyptic number.

85809358 is a deficient number, since it is larger than the sum of its proper divisors (50084162).

85809358 is a wasteful number, since it uses less digits than its factorization.

85809358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6771.

The product of its (nonzero) digits is 345600, while the sum is 46.

The square root of 85809358 is about 9263.3340650114. The cubic root of 85809358 is about 441.0740941898.

The spelling of 85809358 in words is "eighty-five million, eight hundred nine thousand, three hundred fifty-eight".