99992813 has 2 divisors, whose sum is σ = 99992814. Its totient is φ = 99992812.

The previous prime is 99992807. The next prime is 99992831. The reversal of 99992813 is 31829999.

Together with next prime (99992831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98148649 + 1844164 = 9907^2 + 1358^2 .

It is a cyclic number.

It is not a de Polignac number, because 99992813 - 2⁴ = 99992797 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99992803) 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 as a sum of consecutive naturals, namely, 49996406 + 49996407.

It is an arithmetic number, because the mean of its divisors is an integer number (49996407).

Almost surely, 2^99992813 is an apocalyptic number.

It is an amenable number.

99992813 is a deficient number, since it is larger than the sum of its proper divisors (1).

99992813 is an equidigital number, since it uses as much as digits as its factorization.

99992813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 314928, while the sum is 50.

The square root of 99992813 is about 9999.6406435431. The cubic root of 99992813 is about 464.1477633952.

The spelling of 99992813 in words is "ninety-nine million, nine hundred ninety-two thousand, eight hundred thirteen".