82466209 has 4 divisors (see below), whose sum is σ = 94247104. Its totient is φ = 70685316.

The previous prime is 82466179. The next prime is 82466221. The reversal of 82466209 is 90266428.

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 a de Polignac number, because none of the positive numbers 2^k-82466209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82466299) 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, 5890437 + ... + 5890450.

It is an arithmetic number, because the mean of its divisors is an integer number (23561776).

Almost surely, 2^82466209 is an apocalyptic number.

It is an amenable number.

82466209 is a deficient number, since it is larger than the sum of its proper divisors (11780895).

82466209 is a wasteful number, since it uses less digits than its factorization.

82466209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11780894.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 82466209 is about 9081.0907384521. The cubic root of 82466209 is about 435.2699412291.

The spelling of 82466209 in words is "eighty-two million, four hundred sixty-six thousand, two hundred nine".