85900309 has 8 divisors (see below), whose sum is σ = 93834720. Its totient is φ = 77986800.

The previous prime is 85900307. The next prime is 85900319. The reversal of 85900309 is 90300958.

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 85900309 - 2¹ = 85900307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85900301) 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, 4107 + ... + 13735.

It is an arithmetic number, because the mean of its divisors is an integer number (11729340).

Almost surely, 2^85900309 is an apocalyptic number.

It is an amenable number.

85900309 is a deficient number, since it is larger than the sum of its proper divisors (7934411).

85900309 is a wasteful number, since it uses less digits than its factorization.

85900309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10451.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 85900309 is about 9268.2419584299. The cubic root of 85900309 is about 441.2298734891.

The spelling of 85900309 in words is "eighty-five million, nine hundred thousand, three hundred nine".