80718839 has 8 divisors (see below), whose sum is σ = 85812048. Its totient is φ = 75664000.

The previous prime is 80718811. The next prime is 80718851. The reversal of 80718839 is 93881708.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80718839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80718839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80718809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5192 + ... + 13725.

It is an arithmetic number, because the mean of its divisors is an integer number (10726506).

Almost surely, 2^80718839 is an apocalyptic number.

80718839 is a deficient number, since it is larger than the sum of its proper divisors (5093209).

80718839 is a wasteful number, since it uses less digits than its factorization.

80718839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19185.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 80718839 is about 8984.3663660828. The cubic root of 80718839 is about 432.1736681002.

The spelling of 80718839 in words is "eighty million, seven hundred eighteen thousand, eight hundred thirty-nine".