80384857 has 16 divisors (see below), whose sum is σ = 97587072. Its totient is φ = 64638720.

The previous prime is 80384849. The next prime is 80384867. The reversal of 80384857 is 75848308.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 80384857 - 2³ = 80384849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80384867) 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 15 ways as a sum of consecutive naturals, for example, 43482 + ... + 45292.

It is an arithmetic number, because the mean of its divisors is an integer number (6099192).

Almost surely, 2^80384857 is an apocalyptic number.

It is an amenable number.

80384857 is a deficient number, since it is larger than the sum of its proper divisors (17202215).

80384857 is a wasteful number, since it uses less digits than its factorization.

80384857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208.

The product of its (nonzero) digits is 215040, while the sum is 43.

The square root of 80384857 is about 8965.7602577807. The cubic root of 80384857 is about 431.5767906848.

The spelling of 80384857 in words is "eighty million, three hundred eighty-four thousand, eight hundred fifty-seven".