80385309 has 12 divisors (see below), whose sum is σ = 116597052. Its totient is φ = 53366400.

The previous prime is 80385293. The next prime is 80385313. The reversal of 80385309 is 90358308.

It can be written as a sum of positive squares in 2 ways, for example, as 66879684 + 13505625 = 8178^2 + 3675^2 .

It is not a de Polignac number, because 80385309 - 2⁴ = 80385293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80385329) 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 11 ways as a sum of consecutive naturals, for example, 16362 + ... + 20699.

It is an arithmetic number, because the mean of its divisors is an integer number (9716421).

Almost surely, 2^80385309 is an apocalyptic number.

It is an amenable number.

80385309 is a deficient number, since it is larger than the sum of its proper divisors (36211743).

80385309 is a wasteful number, since it uses less digits than its factorization.

80385309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37308 (or 37305 counting only the distinct ones).

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

The square root of 80385309 is about 8965.7854647543. The cubic root of 80385309 is about 431.5775995948.

The spelling of 80385309 in words is "eighty million, three hundred eighty-five thousand, three hundred nine".