99876013 has 2 divisors, whose sum is σ = 99876014. Its totient is φ = 99876012.

The previous prime is 99876011. The next prime is 99876031. The reversal of 99876013 is 31067899.

Together with next prime (99876031) 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., 56881764 + 42994249 = 7542^2 + 6557^2 .

It is an emirp because it is prime and its reverse (31067899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99876013 - 2¹ = 99876011 is a prime.

Together with 99876011, it forms a pair of twin primes.

It is equal to p_5754688 and since 99876013 and 5754688 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 (99876011) 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, 49938006 + 49938007.

It is an arithmetic number, because the mean of its divisors is an integer number (49938007).

Almost surely, 2^99876013 is an apocalyptic number.

It is an amenable number.

99876013 is a deficient number, since it is larger than the sum of its proper divisors (1).

99876013 is an equidigital number, since it uses as much as digits as its factorization.

99876013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 99876013 is about 9993.7987272108. The cubic root of 99876013 is about 463.9669717994.

The spelling of 99876013 in words is "ninety-nine million, eight hundred seventy-six thousand, thirteen".