83832809 has 4 divisors (see below), whose sum is σ = 83998020. Its totient is φ = 83667600.

The previous prime is 83832799. The next prime is 83832817. The reversal of 83832809 is 90823838.

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 77088400 + 6744409 = 8780^2 + 2597^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83832809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83832839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81842 + ... + 82859.

It is an arithmetic number, because the mean of its divisors is an integer number (20999505).

Almost surely, 2^83832809 is an apocalyptic number.

It is an amenable number.

83832809 is a deficient number, since it is larger than the sum of its proper divisors (165211).

83832809 is a wasteful number, since it uses less digits than its factorization.

83832809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165210.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 83832809 is about 9156.0258300204. The cubic root of 83832809 is about 437.6611590222.

The spelling of 83832809 in words is "eighty-three million, eight hundred thirty-two thousand, eight hundred nine".