80795009 has 4 divisors (see below), whose sum is σ = 81130500. Its totient is φ = 80459520.

The previous prime is 80794991. The next prime is 80795017. The reversal of 80795009 is 90059708.

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

It can be written as a sum of positive squares in 2 ways, for example, as 69772609 + 11022400 = 8353^2 + 3320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80795009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80795059) 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 3 ways as a sum of consecutive naturals, for example, 167384 + ... + 167865.

It is an arithmetic number, because the mean of its divisors is an integer number (20282625).

Almost surely, 2^80795009 is an apocalyptic number.

It is an amenable number.

80795009 is a deficient number, since it is larger than the sum of its proper divisors (335491).

80795009 is a wasteful number, since it uses less digits than its factorization.

80795009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335490.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 80795009 is about 8988.6043966792. The cubic root of 80795009 is about 432.3095649970.

The spelling of 80795009 in words is "eighty million, seven hundred ninety-five thousand, nine".