83805829 has 4 divisors (see below), whose sum is σ = 83824684. Its totient is φ = 83786976.

The previous prime is 83805823. The next prime is 83805863. The reversal of 83805829 is 92850838.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75220929 + 8584900 = 8673^2 + 2930^2 .

It is a cyclic number.

It is not a de Polignac number, because 83805829 - 2⁹ = 83805317 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 (83805823) 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, 1339 + ... + 13015.

It is an arithmetic number, because the mean of its divisors is an integer number (20956171).

Almost surely, 2^83805829 is an apocalyptic number.

It is an amenable number.

83805829 is a deficient number, since it is larger than the sum of its proper divisors (18855).

83805829 is a wasteful number, since it uses less digits than its factorization.

83805829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18854.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 83805829 is about 9154.5523648074. The cubic root of 83805829 is about 437.6142030027.

The spelling of 83805829 in words is "eighty-three million, eight hundred five thousand, eight hundred twenty-nine".