80982823 has 4 divisors (see below), whose sum is σ = 81769168. Its totient is φ = 80196480.

The previous prime is 80982779. The next prime is 80982827. The reversal of 80982823 is 32828908.

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 80982823 - 2²¹ = 78885671 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 (80982827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393018 + ... + 393223.

It is an arithmetic number, because the mean of its divisors is an integer number (20442292).

Almost surely, 2^80982823 is an apocalyptic number.

80982823 is a deficient number, since it is larger than the sum of its proper divisors (786345).

80982823 is a wasteful number, since it uses less digits than its factorization.

80982823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786344.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 80982823 is about 8999.0456716254. The cubic root of 80982823 is about 432.6442843364.

The spelling of 80982823 in words is "eighty million, nine hundred eighty-two thousand, eight hundred twenty-three".