83800004209 has 8 divisors (see below), whose sum is σ = 85180670280. Its totient is φ = 82429095936.

The previous prime is 83800004173. The next prime is 83800004227. The reversal of 83800004209 is 90240000838.

It can be written as a sum of positive squares in 4 ways, for example, as 7880467984 + 75919536225 = 88772^2 + 275535^2 .

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 83800004209 - 2¹¹ = 83800002161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83800001209) 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 7 ways as a sum of consecutive naturals, for example, 2422132 + ... + 2456485.

It is an arithmetic number, because the mean of its divisors is an integer number (10647583785).

Almost surely, 2^83800004209 is an apocalyptic number.

83800004209 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

83800004209 is a deficient number, since it is larger than the sum of its proper divisors (1380666071).

83800004209 is a wasteful number, since it uses less digits than its factorization.

83800004209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4878899.

The product of its (nonzero) digits is 13824, while the sum is 34.

The spelling of 83800004209 in words is "eighty-three billion, eight hundred million, four thousand, two hundred nine".