85309803 has 12 divisors (see below), whose sum is σ = 123552000. Its totient is φ = 56722416.

The previous prime is 85309787. The next prime is 85309813. The reversal of 85309803 is 30890358.

It is not a de Polignac number, because 85309803 - 2⁴ = 85309787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85309813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8928 + ... + 15821.

It is an arithmetic number, because the mean of its divisors is an integer number (10296000).

Almost surely, 2^85309803 is an apocalyptic number.

85309803 is a deficient number, since it is larger than the sum of its proper divisors (38242197).

85309803 is a wasteful number, since it uses less digits than its factorization.

85309803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25138 (or 25135 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 85309803 is about 9236.3306025716. The cubic root of 85309803 is about 440.2164964196.

The spelling of 85309803 in words is "eighty-five million, three hundred nine thousand, eight hundred three".