813984927499 has 2 divisors, whose sum is σ = 813984927500. Its totient is φ = 813984927498.

The previous prime is 813984927493. The next prime is 813984927521. The reversal of 813984927499 is 994729489318.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 813984927499 - 2⁵ = 813984927467 is a prime.

It is not a weakly prime, because it can be changed into another prime (813984927493) 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 as a sum of consecutive naturals, namely, 406992463749 + 406992463750.

It is an arithmetic number, because the mean of its divisors is an integer number (406992463750).

Almost surely, 2^813984927499 is an apocalyptic number.

813984927499 is a deficient number, since it is larger than the sum of its proper divisors (1).

813984927499 is an equidigital number, since it uses as much as digits as its factorization.

813984927499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282175488, while the sum is 73.

The spelling of 813984927499 in words is "eight hundred thirteen billion, nine hundred eighty-four million, nine hundred twenty-seven thousand, four hundred ninety-nine".