83785243 has 4 divisors (see below), whose sum is σ = 83960640. Its totient is φ = 83609848.

The previous prime is 83785201. The next prime is 83785249. The reversal of 83785243 is 34258738.

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 83785243 - 2²¹ = 81688091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83785196 and 83785205.

It is not an unprimeable number, because it can be changed into a prime (83785249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86980 + ... + 87937.

It is an arithmetic number, because the mean of its divisors is an integer number (20990160).

Almost surely, 2^83785243 is an apocalyptic number.

83785243 is a deficient number, since it is larger than the sum of its proper divisors (175397).

83785243 is a wasteful number, since it uses less digits than its factorization.

83785243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175396.

The product of its digits is 161280, while the sum is 40.

The square root of 83785243 is about 9153.4279371173. The cubic root of 83785243 is about 437.5783683286.

The spelling of 83785243 in words is "eighty-three million, seven hundred eighty-five thousand, two hundred forty-three".