80343209 has 4 divisors (see below), whose sum is σ = 83836416. Its totient is φ = 76850004.

The previous prime is 80343203. The next prime is 80343233. The reversal of 80343209 is 90234308.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80343209 - 2¹² = 80339113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80343203) 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, 1746569 + ... + 1746614.

It is an arithmetic number, because the mean of its divisors is an integer number (20959104).

Almost surely, 2^80343209 is an apocalyptic number.

It is an amenable number.

80343209 is a deficient number, since it is larger than the sum of its proper divisors (3493207).

80343209 is a wasteful number, since it uses less digits than its factorization.

80343209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3493206.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 80343209 is about 8963.4373428947. The cubic root of 80343209 is about 431.5022434133.

The spelling of 80343209 in words is "eighty million, three hundred forty-three thousand, two hundred nine".