99999307 has 2 divisors, whose sum is σ = 99999308. Its totient is φ = 99999306.

The previous prime is 99999259. The next prime is 99999323. The reversal of 99999307 is 70399999.

It is a strong prime.

It is an emirp because it is prime and its reverse (70399999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99999307 - 2¹⁵ = 99966539 is a prime.

It is a super-2 number, since 2×99999307² = 19999722800960498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99990307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49999653 + 49999654.

It is an arithmetic number, because the mean of its divisors is an integer number (49999654).

Almost surely, 2^99999307 is an apocalyptic number.

99999307 is a deficient number, since it is larger than the sum of its proper divisors (1).

99999307 is an equidigital number, since it uses as much as digits as its factorization.

99999307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1240029, while the sum is 55.

The square root of 99999307 is about 9999.9653499400. The cubic root of 99999307 is about 464.1578111518.

It can be divided in two parts, 9999 and 9307, that added together give a triangular number (19306 = T₁₉₆).

The spelling of 99999307 in words is "ninety-nine million, nine hundred ninety-nine thousand, three hundred seven".