99812071 has 2 divisors, whose sum is σ = 99812072. Its totient is φ = 99812070.

The previous prime is 99812039. The next prime is 99812077. The reversal of 99812071 is 17021899.

It is a strong prime.

It is an emirp because it is prime and its reverse (17021899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99812071 - 2⁵ = 99812039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99812071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99812077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49906035 + 49906036.

It is an arithmetic number, because the mean of its divisors is an integer number (49906036).

Almost surely, 2^99812071 is an apocalyptic number.

99812071 is a deficient number, since it is larger than the sum of its proper divisors (1).

99812071 is an equidigital number, since it uses as much as digits as its factorization.

99812071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 99812071 is about 9990.5991311833. The cubic root of 99812071 is about 463.8679379789.

The spelling of 99812071 in words is "ninety-nine million, eight hundred twelve thousand, seventy-one".