83966843 has 4 divisors (see below), whose sum is σ = 83986440. Its totient is φ = 83947248.

The previous prime is 83966837. The next prime is 83966881. The reversal of 83966843 is 34866938.

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 83966843 - 2²⁶ = 16857979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83966243) 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, 305 + ... + 12962.

It is an arithmetic number, because the mean of its divisors is an integer number (20996610).

Almost surely, 2^83966843 is an apocalyptic number.

83966843 is a deficient number, since it is larger than the sum of its proper divisors (19597).

83966843 is a wasteful number, since it uses less digits than its factorization.

83966843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19596.

The product of its digits is 746496, while the sum is 47.

The square root of 83966843 is about 9163.3423487284. The cubic root of 83966843 is about 437.8942827084.

The spelling of 83966843 in words is "eighty-three million, nine hundred sixty-six thousand, eight hundred forty-three".