80339909 has 8 divisors (see below), whose sum is σ = 91609560. Its totient is φ = 69797376.

The previous prime is 80339881. The next prime is 80339911. The reversal of 80339909 is 90993308.

It can be written as a sum of positive squares in 4 ways, for example, as 3724900 + 76615009 = 1930^2 + 8753^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-80339909 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 (80339939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181544 + ... + 181985.

It is an arithmetic number, because the mean of its divisors is an integer number (11451195).

Almost surely, 2^80339909 is an apocalyptic number.

It is an amenable number.

80339909 is a deficient number, since it is larger than the sum of its proper divisors (11269651).

80339909 is a wasteful number, since it uses less digits than its factorization.

80339909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363559.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 80339909 is about 8963.2532598382. The cubic root of 80339909 is about 431.4963355217.

The spelling of 80339909 in words is "eighty million, three hundred thirty-nine thousand, nine hundred nine".