80939289 has 8 divisors (see below), whose sum is σ = 110551392. Its totient is φ = 52643360.

The previous prime is 80939269. The next prime is 80939291. The reversal of 80939289 is 98293908.

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 80939289 - 2⁷ = 80939161 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80939269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328899 + ... + 329144.

It is an arithmetic number, because the mean of its divisors is an integer number (13818924).

Almost surely, 2^80939289 is an apocalyptic number.

It is an amenable number.

80939289 is a deficient number, since it is larger than the sum of its proper divisors (29612103).

80939289 is a wasteful number, since it uses less digits than its factorization.

80939289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658087.

The product of its (nonzero) digits is 279936, while the sum is 48.

The square root of 80939289 is about 8996.6265344294. The cubic root of 80939289 is about 432.5667447974.

The spelling of 80939289 in words is "eighty million, nine hundred thirty-nine thousand, two hundred eighty-nine".