827981099 has 6 divisors (see below), whose sum is σ = 910095060. Its totient is φ = 752709980.

The previous prime is 827981083. The next prime is 827981129. The reversal of 827981099 is 990189728.

It is not a de Polignac number, because 827981099 - 2⁴ = 827981083 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 827981099.

It is not an unprimeable number, because it can be changed into a prime (827981599) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3421289 + ... + 3421530.

It is an arithmetic number, because the mean of its divisors is an integer number (151682510).

Almost surely, 2^827981099 is an apocalyptic number.

827981099 is a deficient number, since it is larger than the sum of its proper divisors (82113961).

827981099 is a wasteful number, since it uses less digits than its factorization.

827981099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6842841 (or 6842830 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 53.

The square root of 827981099 is about 28774.6607104237. The cubic root of 827981099 is about 939.0170421187.

The spelling of 827981099 in words is "eight hundred twenty-seven million, nine hundred eighty-one thousand, ninety-nine".