82193309 has 8 divisors (see below), whose sum is σ = 89749728. Its totient is φ = 74650960.

The previous prime is 82193299. The next prime is 82193333. The reversal of 82193309 is 90339128.

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 82193309 - 2¹² = 82189213 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 (82193009) 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, 11519 + ... + 17235.

It is an arithmetic number, because the mean of its divisors is an integer number (11218716).

Almost surely, 2^82193309 is an apocalyptic number.

It is an amenable number.

82193309 is a deficient number, since it is larger than the sum of its proper divisors (7556419).

82193309 is a wasteful number, since it uses less digits than its factorization.

82193309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7035.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 82193309 is about 9066.0525588593. The cubic root of 82193309 is about 434.7892738983.

It can be divided in two parts, 82 and 193309, that added together give a palindrome (193391).

The spelling of 82193309 in words is "eighty-two million, one hundred ninety-three thousand, three hundred nine".