99673831 has 2 divisors, whose sum is σ = 99673832. Its totient is φ = 99673830.

The previous prime is 99673813. The next prime is 99673843. The reversal of 99673831 is 13837699.

Together with previous prime (99673813) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (13837699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99673831 - 2⁵ = 99673799 is a prime.

It is a super-2 number, since 2×99673831² = 19869745172433122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99673891) 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, 49836915 + 49836916.

It is an arithmetic number, because the mean of its divisors is an integer number (49836916).

Almost surely, 2^99673831 is an apocalyptic number.

99673831 is a deficient number, since it is larger than the sum of its proper divisors (1).

99673831 is an equidigital number, since it uses as much as digits as its factorization.

99673831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 46.

The square root of 99673831 is about 9983.6782299912. The cubic root of 99673831 is about 463.6536862343.

The spelling of 99673831 in words is "ninety-nine million, six hundred seventy-three thousand, eight hundred thirty-one".