83968913 has 8 divisors (see below), whose sum is σ = 96845760. Its totient is φ = 71312400.

The previous prime is 83968909. The next prime is 83968921. The reversal of 83968913 is 31986938.

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 83968913 - 2² = 83968909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83968013) 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, 54263 + ... + 55788.

It is an arithmetic number, because the mean of its divisors is an integer number (12105720).

Almost surely, 2^83968913 is an apocalyptic number.

It is an amenable number.

83968913 is a deficient number, since it is larger than the sum of its proper divisors (12876847).

83968913 is a wasteful number, since it uses less digits than its factorization.

83968913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110167.

The product of its digits is 279936, while the sum is 47.

The square root of 83968913 is about 9163.4552980849. The cubic root of 83968913 is about 437.8978810880.

The spelling of 83968913 in words is "eighty-three million, nine hundred sixty-eight thousand, nine hundred thirteen".