83893274209 has 4 divisors (see below), whose sum is σ = 83894429700. Its totient is φ = 83892118720.

The previous prime is 83893274173. The next prime is 83893274237. The reversal of 83893274209 is 90247239838.

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 34210201600 + 49683072609 = 184960^2 + 222897^2 .

It is a cyclic number.

It is not a de Polignac number, because 83893274209 - 2¹¹ = 83893272161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83893274209.

It is not an unprimeable number, because it can be changed into a prime (83893274909) 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, 460972 + ... + 616669.

It is an arithmetic number, because the mean of its divisors is an integer number (20973607425).

Almost surely, 2^83893274209 is an apocalyptic number.

It is an amenable number.

83893274209 is a deficient number, since it is larger than the sum of its proper divisors (1155491).

83893274209 is a wasteful number, since it uses less digits than its factorization.

83893274209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155490.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 83893274209 in words is "eighty-three billion, eight hundred ninety-three million, two hundred seventy-four thousand, two hundred nine".