99399967 has 2 divisors, whose sum is σ = 99399968. Its totient is φ = 99399966.

The previous prime is 99399947. The next prime is 99399973. The reversal of 99399967 is 76999399.

It is a strong prime.

It is an emirp because it is prime and its reverse (76999399) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99399967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99399947) 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, 49699983 + 49699984.

It is an arithmetic number, because the mean of its divisors is an integer number (49699984).

Almost surely, 2^99399967 is an apocalyptic number.

99399967 is a deficient number, since it is larger than the sum of its proper divisors (1).

99399967 is an equidigital number, since it uses as much as digits as its factorization.

99399967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7440174, while the sum is 61.

The square root of 99399967 is about 9969.9532095191. The cubic root of 99399967 is about 463.2286514826.

The spelling of 99399967 in words is "ninety-nine million, three hundred ninety-nine thousand, nine hundred sixty-seven".