99713813 has 2 divisors, whose sum is σ = 99713814. Its totient is φ = 99713812.

The previous prime is 99713797. The next prime is 99713819. The reversal of 99713813 is 31831799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99161764 + 552049 = 9958^2 + 743^2 .

It is an emirp because it is prime and its reverse (31831799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99713813 - 2⁴ = 99713797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99713819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49856906 + 49856907.

It is an arithmetic number, because the mean of its divisors is an integer number (49856907).

Almost surely, 2^99713813 is an apocalyptic number.

It is an amenable number.

99713813 is a deficient number, since it is larger than the sum of its proper divisors (1).

99713813 is an equidigital number, since it uses as much as digits as its factorization.

99713813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 41.

The square root of 99713813 is about 9985.6803974491. The cubic root of 99713813 is about 463.7156728272.

The spelling of 99713813 in words is "ninety-nine million, seven hundred thirteen thousand, eight hundred thirteen".