80982209 has 8 divisors (see below), whose sum is σ = 100964928. Its totient is φ = 63102960.

The previous prime is 80982191. The next prime is 80982217. The reversal of 80982209 is 90228908.

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

It is a cyclic number.

It is not a de Polignac number, because 80982209 - 2¹² = 80978113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80982299) 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, 525782 + ... + 525935.

It is an arithmetic number, because the mean of its divisors is an integer number (12620616).

Almost surely, 2^80982209 is an apocalyptic number.

It is an amenable number.

80982209 is a deficient number, since it is larger than the sum of its proper divisors (19982719).

80982209 is a wasteful number, since it uses less digits than its factorization.

80982209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051735.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 80982209 is about 8999.0115568322. The cubic root of 80982209 is about 432.6431909182.

It can be divided in two parts, 80 and 982209, that added together give a palindrome (982289).

The spelling of 80982209 in words is "eighty million, nine hundred eighty-two thousand, two hundred nine".