85809803 has 4 divisors (see below), whose sum is σ = 89540688. Its totient is φ = 82078920.

The previous prime is 85809793. The next prime is 85809817. The reversal of 85809803 is 30890858.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85809803 - 2⁶ = 85809739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85809203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1865408 + ... + 1865453.

It is an arithmetic number, because the mean of its divisors is an integer number (22385172).

Almost surely, 2^85809803 is an apocalyptic number.

85809803 is a deficient number, since it is larger than the sum of its proper divisors (3730885).

85809803 is a wasteful number, since it uses less digits than its factorization.

85809803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3730884.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 85809803 is about 9263.3580844098. The cubic root of 85809803 is about 441.0748566460.

The spelling of 85809803 in words is "eighty-five million, eight hundred nine thousand, eight hundred three".