99807013 has 2 divisors, whose sum is σ = 99807014. Its totient is φ = 99807012.

The previous prime is 99807007. The next prime is 99807031. The reversal of 99807013 is 31070899.

Together with next prime (99807031) 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., 90668484 + 9138529 = 9522^2 + 3023^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99807013 is a prime.

It is a super-2 number, since 2×99807013² = 19922879687964338, which contains 22 as substring.

It is equal to p_5750938 and since 99807013 and 5750938 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99807413) 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, 49903506 + 49903507.

It is an arithmetic number, because the mean of its divisors is an integer number (49903507).

Almost surely, 2^99807013 is an apocalyptic number.

It is an amenable number.

99807013 is a deficient number, since it is larger than the sum of its proper divisors (1).

99807013 is an equidigital number, since it uses as much as digits as its factorization.

99807013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 99807013 is about 9990.3459900046. The cubic root of 99807013 is about 463.8601023078.

The spelling of 99807013 in words is "ninety-nine million, eight hundred seven thousand, thirteen".