85830309 has 12 divisors (see below), whose sum is σ = 126079200. Its totient is φ = 56250024.

The previous prime is 85830301. The next prime is 85830359. The reversal of 85830309 is 90303858.

It is not a de Polignac number, because 85830309 - 2³ = 85830301 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85830301) 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, 80289 + ... + 81350.

It is an arithmetic number, because the mean of its divisors is an integer number (10506600).

Almost surely, 2^85830309 is an apocalyptic number.

It is an amenable number.

85830309 is a deficient number, since it is larger than the sum of its proper divisors (40248891).

85830309 is a wasteful number, since it uses less digits than its factorization.

85830309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161704 (or 161701 counting only the distinct ones).

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

The square root of 85830309 is about 9264.4648523269. The cubic root of 85830309 is about 441.1099884543.

The spelling of 85830309 in words is "eighty-five million, eight hundred thirty thousand, three hundred nine".