99090905803 has 2 divisors, whose sum is σ = 99090905804. Its totient is φ = 99090905802.

The previous prime is 99090905779. The next prime is 99090905857. The reversal of 99090905803 is 30850909099.

It is a weak prime.

It is an emirp because it is prime and its reverse (30850909099) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99090905803 - 2¹³ = 99090897611 is a prime.

It is a super-2 number, since 2×99090905803² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99090905873) 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, 49545452901 + 49545452902.

It is an arithmetic number, because the mean of its divisors is an integer number (49545452902).

Almost surely, 2^99090905803 is an apocalyptic number.

99090905803 is a deficient number, since it is larger than the sum of its proper divisors (1).

99090905803 is an equidigital number, since it uses as much as digits as its factorization.

99090905803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 787320, while the sum is 52.

The spelling of 99090905803 in words is "ninety-nine billion, ninety million, nine hundred five thousand, eight hundred three".