85703809 has 8 divisors (see below), whose sum is σ = 90139392. Its totient is φ = 81372720.

The previous prime is 85703789. The next prime is 85703831. The reversal of 85703809 is 90830758.

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

It is a cyclic number.

It is not a de Polignac number, because 85703809 - 2⁵ = 85703777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85703879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24439 + ... + 27724.

It is an arithmetic number, because the mean of its divisors is an integer number (11267424).

Almost surely, 2^85703809 is an apocalyptic number.

It is an amenable number.

85703809 is a deficient number, since it is larger than the sum of its proper divisors (4435583).

85703809 is a wasteful number, since it uses less digits than its factorization.

85703809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52247.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 85703809 is about 9257.6351731962. The cubic root of 85703809 is about 440.8931736319.

The spelling of 85703809 in words is "eighty-five million, seven hundred three thousand, eight hundred nine".