80790439 has 4 divisors (see below), whose sum is σ = 80977456. Its totient is φ = 80603424.

The previous prime is 80790431. The next prime is 80790469. The reversal of 80790439 is 93409708.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80790439 - 2³ = 80790431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80790431) 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 3 ways as a sum of consecutive naturals, for example, 92859 + ... + 93724.

It is an arithmetic number, because the mean of its divisors is an integer number (20244364).

Almost surely, 2^80790439 is an apocalyptic number.

80790439 is a deficient number, since it is larger than the sum of its proper divisors (187017).

80790439 is a wasteful number, since it uses less digits than its factorization.

80790439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187016.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 80790439 is about 8988.3501823193. The cubic root of 80790439 is about 432.3014139492.

The spelling of 80790439 in words is "eighty million, seven hundred ninety thousand, four hundred thirty-nine".