81984353 has 8 divisors (see below), whose sum is σ = 94698720. Its totient is φ = 70146880.

The previous prime is 81984337. The next prime is 81984377. The reversal of 81984353 is 35348918.

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 81984353 - 2⁴ = 81984337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 81984353.

It is not an unprimeable number, because it can be changed into a prime (81984313) 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, 219023 + ... + 219396.

It is an arithmetic number, because the mean of its divisors is an integer number (11837340).

Almost surely, 2^81984353 is an apocalyptic number.

It is an amenable number.

81984353 is a deficient number, since it is larger than the sum of its proper divisors (12714367).

81984353 is a wasteful number, since it uses less digits than its factorization.

81984353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438447.

The product of its digits is 103680, while the sum is 41.

The square root of 81984353 is about 9054.5211358746. The cubic root of 81984353 is about 434.4205134443.

The spelling of 81984353 in words is "eighty-one million, nine hundred eighty-four thousand, three hundred fifty-three".